[
  {
    "index": 1,
    "lesson": "课程内容提要",
    "chapter_id": "161703",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/508/p2SLZskTvW.png",
    "file": "01-p2SLZskTvW.png",
    "width": 705,
    "height": 634,
    "format": "PNG",
    "bytes": 39048,
    "sha256": "f8a64f853c6baa3e9e7ebbaefb00d0fc489d89f866df2dbf8e72638dced28de3"
  },
  {
    "index": 2,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/484/wJnAXwdXQ9.png",
    "file": "02-wJnAXwdXQ9.png",
    "width": 470,
    "height": 54,
    "format": "PNG",
    "bytes": 2566,
    "sha256": "ac262d0c6bab60adc3379e176519c811b44402c1180399742fe1fb97248d57c0"
  },
  {
    "index": 3,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/330/cNSSQ4e4cZ.png",
    "file": "03-cNSSQ4e4cZ.png",
    "width": 902,
    "height": 477,
    "format": "PNG",
    "bytes": 49075,
    "sha256": "8539e2c36bc07bcb2e28cbab65eef6a5b1f3e19cfcb2abaec3fa173303383e6a"
  },
  {
    "index": 4,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/842/YnxuhyXaT2.png",
    "file": "04-YnxuhyXaT2.png",
    "width": 993,
    "height": 46,
    "format": "PNG",
    "bytes": 3050,
    "sha256": "f76924ec8f3882d58f187a91b0be6a1937475826bc3ed095aec598db59a46e40"
  },
  {
    "index": 5,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/315/tMkrdb3pqd.png",
    "file": "05-tMkrdb3pqd.png",
    "width": 649,
    "height": 388,
    "format": "PNG",
    "bytes": 19835,
    "sha256": "79b9d4c56051196281bcfe4a42408cef02d330ff90d30dba8a177a82a40c4064"
  },
  {
    "index": 6,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/818/N5k7kNDJgC.png",
    "file": "06-N5k7kNDJgC.png",
    "width": 863,
    "height": 202,
    "format": "PNG",
    "bytes": 15190,
    "sha256": "4afae755ef16ab7ecbd5eded300a3cdd84b9108f18291278a90180e03605e2b9"
  },
  {
    "index": 7,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/474/9fHeQkdg6g.png",
    "file": "07-9fHeQkdg6g.png",
    "width": 567,
    "height": 113,
    "format": "PNG",
    "bytes": 7867,
    "sha256": "67089c3a0b8e73a24e55a5ba43c0cc067152e5c0c5cc972f1fdaba0bde5eeee4"
  },
  {
    "index": 8,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/925/2v4y8tvgM9.png",
    "file": "08-2v4y8tvgM9.png",
    "width": 477,
    "height": 133,
    "format": "PNG",
    "bytes": 3702,
    "sha256": "24736d3d9f5146c15d083a0efab4c97ce645600182cfa75ec73e2ac74b8aa78c"
  },
  {
    "index": 9,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/695/JvMwAJ7yJ6.png",
    "file": "09-JvMwAJ7yJ6.png",
    "width": 508,
    "height": 152,
    "format": "PNG",
    "bytes": 4215,
    "sha256": "8f992fa7f8c3940ee32bdea01ea0ac49e94d06b08bb41086eb3c54b6cad743c6"
  },
  {
    "index": 10,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/895/rEY7sP3ynq.png",
    "file": "10-rEY7sP3ynq.png",
    "width": 510,
    "height": 116,
    "format": "PNG",
    "bytes": 4116,
    "sha256": "588feef416d1dabb7e2fb9f3369951488fa5ee7f93df0b97283b6fd1f418728a"
  },
  {
    "index": 11,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/560/ZB5vVHCqcH.png",
    "file": "11-ZB5vVHCqcH.png",
    "width": 464,
    "height": 144,
    "format": "PNG",
    "bytes": 6642,
    "sha256": "0052824bf8e98029b76321a8ce8009e180365d3556c1875e165f22cc9462114d"
  },
  {
    "index": 12,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/694/ArZs4ruJEL.png",
    "file": "12-ArZs4ruJEL.png",
    "width": 528,
    "height": 161,
    "format": "PNG",
    "bytes": 8407,
    "sha256": "731a570adb24ce7c7d1edc3218e48e65fb39549f578acd670156131014356cc8"
  },
  {
    "index": 13,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/849/ZFWB6BVjKv.png",
    "file": "13-ZFWB6BVjKv.png",
    "width": 454,
    "height": 136,
    "format": "PNG",
    "bytes": 6096,
    "sha256": "3eb4a8169c9287bd6fc23f09d40a4abb6c31fd6d1ebeaa914db9dce15a6a7b60"
  },
  {
    "index": 14,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/556/L7Nd8yqVCu.png",
    "file": "14-L7Nd8yqVCu.png",
    "width": 637,
    "height": 246,
    "format": "PNG",
    "bytes": 9296,
    "sha256": "fa4ee068a295fe8802b19d01769d7d0f9f19975f06248233ead08986a221ea88"
  },
  {
    "index": 15,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/551/9B7Mntb2kN.png",
    "file": "15-9B7Mntb2kN.png",
    "width": 993,
    "height": 286,
    "format": "PNG",
    "bytes": 37381,
    "sha256": "2888871db730e85244094ce65934ea196de41379e4a404c11a25099fabb903d1"
  },
  {
    "index": 16,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/221/QmyXfEe4WX.png",
    "file": "16-QmyXfEe4WX.png",
    "width": 565,
    "height": 362,
    "format": "PNG",
    "bytes": 14241,
    "sha256": "dcb530c047a8b8d7d7365aab9d4e9d346b5d57de4b2e28cbdaabe3671d8bcc49"
  },
  {
    "index": 17,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/470/g2vwduvBTd.png",
    "file": "17-g2vwduvBTd.png",
    "width": 492,
    "height": 297,
    "format": "PNG",
    "bytes": 25920,
    "sha256": "279c483b664d7acc965670ffc2aeb08d526c942536c73603d54e0d541846627e"
  },
  {
    "index": 18,
    "lesson": "线性结构",
    "chapter_id": "161705",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/978/KCk9RYKH8f.png",
    "file": "18-KCk9RYKH8f.png",
    "width": 660,
    "height": 85,
    "format": "PNG",
    "bytes": 5589,
    "sha256": "f09198e8f98ee86f440849206a6b0577aa9c2aac00d42e5633e9ffdfb6fc0bec"
  },
  {
    "index": 19,
    "lesson": "数组与矩阵",
    "chapter_id": "161706",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/658/zTnKfq3zrR.png",
    "file": "19-zTnKfq3zrR.png",
    "width": 994,
    "height": 164,
    "format": "PNG",
    "bytes": 20375,
    "sha256": "419081431ac2e1f039edc0517e90df02b81208312fc3c5607c9f73481da2e34c"
  },
  {
    "index": 20,
    "lesson": "数组与矩阵",
    "chapter_id": "161706",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/865/tsBpRBNzY5.png",
    "file": "20-tsBpRBNzY5.png",
    "width": 993,
    "height": 308,
    "format": "PNG",
    "bytes": 17252,
    "sha256": "1fa358c197fc382d1facaace616c66d4b6061499756eecf5aeb10d78e01b89c0"
  },
  {
    "index": 21,
    "lesson": "数组与矩阵",
    "chapter_id": "161706",
    "url": "https://img.kuaiwenyun.com/product/2026-04/56/XGD4rztX8G.png",
    "file": "21-XGD4rztX8G.png",
    "width": 937,
    "height": 420,
    "format": "PNG",
    "bytes": 90046,
    "sha256": "1fe245476eef01582b6582162e60e32fecc9650ec44a1750e2d77fcc333cb7d7"
  },
  {
    "index": 22,
    "lesson": "数组与矩阵",
    "chapter_id": "161706",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/189/wxtc5BPzZ2.png",
    "file": "22-wxtc5BPzZ2.png",
    "width": 930,
    "height": 182,
    "format": "PNG",
    "bytes": 25697,
    "sha256": "477c594ea3fafe028a460e5f95286a13fef25af5ed71e15bf8bb764183c5cfea"
  },
  {
    "index": 23,
    "lesson": "数组与矩阵",
    "chapter_id": "161706",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/935/qBHcWtj6qX.png",
    "file": "23-qBHcWtj6qX.png",
    "width": 580,
    "height": 333,
    "format": "PNG",
    "bytes": 13537,
    "sha256": "d47a9405d245f60134ad3e1015c5f2efcc0a54cb54252b0409f7e2ec955c8c7f"
  },
  {
    "index": 24,
    "lesson": "数组与矩阵",
    "chapter_id": "161706",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/177/UnYN52YSbY.png",
    "file": "24-UnYN52YSbY.png",
    "width": 558,
    "height": 354,
    "format": "PNG",
    "bytes": 10497,
    "sha256": "2cab4a2671ded1f2001cca3c9766c88ed49ebd65758008380aec03f9aab95840"
  },
  {
    "index": 25,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/553/mpyxBmR6kB.png",
    "file": "25-mpyxBmR6kB.png",
    "width": 332,
    "height": 211,
    "format": "PNG",
    "bytes": 10504,
    "sha256": "ce63df466be6971be92df0b6ac46ab77b486a0e7bcca81efe31e4f1138c6260c"
  },
  {
    "index": 26,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/399/WtYer7cBK8.png",
    "file": "26-WtYer7cBK8.png",
    "width": 781,
    "height": 704,
    "format": "PNG",
    "bytes": 45991,
    "sha256": "d8d6aa3ab0472612a7b40d719ce6c32117049100bda2530a4a43811fbff15970"
  },
  {
    "index": 27,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/673/yUPuWqUdH7.png",
    "file": "27-yUPuWqUdH7.png",
    "width": 321,
    "height": 195,
    "format": "PNG",
    "bytes": 9338,
    "sha256": "77012ad47d54fbd69dbd9336abcfd7e04de3901bd1f41d37bb992aa2031414d2"
  },
  {
    "index": 28,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/847/CjZDvwamt6.png",
    "file": "28-CjZDvwamt6.png",
    "width": 994,
    "height": 89,
    "format": "PNG",
    "bytes": 5883,
    "sha256": "b916efc83d6e22fbc22bb7a5c87be34b264d22c2fdc2c687b3db7694ec63d8af"
  },
  {
    "index": 29,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/633/3vntm9jtvK.png",
    "file": "29-3vntm9jtvK.png",
    "width": 989,
    "height": 88,
    "format": "PNG",
    "bytes": 7840,
    "sha256": "c923b0516fc6b41e850eeb29176035b66f37eef1dae0ab442ece071c6a22292b"
  },
  {
    "index": 30,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/344/meVgBTdJ5g.png",
    "file": "30-meVgBTdJ5g.png",
    "width": 494,
    "height": 365,
    "format": "PNG",
    "bytes": 18853,
    "sha256": "acb4a5585f1f515ffa9c79e479bc5dfa77d92384f9295d3d4975b776ade814a5"
  },
  {
    "index": 31,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/115/GvRaet5sNY.png",
    "file": "31-GvRaet5sNY.png",
    "width": 270,
    "height": 223,
    "format": "PNG",
    "bytes": 9768,
    "sha256": "50b47aca6e909869acd809262359a5a023d9707eed95345e19ad6e6fe536b7fa"
  },
  {
    "index": 32,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/557/JCCTwpDQ75.png",
    "file": "32-JCCTwpDQ75.png",
    "width": 236,
    "height": 242,
    "format": "PNG",
    "bytes": 8467,
    "sha256": "d3a16cd1e10131870ec9af3bf0d98f695ceff11a43b5f82b73ffc85e1f0539cd"
  },
  {
    "index": 33,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/906/EaGVDCgpq1.png",
    "file": "33-EaGVDCgpq1.png",
    "width": 235,
    "height": 184,
    "format": "PNG",
    "bytes": 5191,
    "sha256": "f81c6fbe53017191c45827053a05eb288a950f193d17ebf6de64c69a5abff30f"
  },
  {
    "index": 34,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/478/MnD8MDmt8b.png",
    "file": "34-MnD8MDmt8b.png",
    "width": 255,
    "height": 52,
    "format": "PNG",
    "bytes": 2561,
    "sha256": "d47f6e7e581c0043320498ad66dd35cce1f5b7dd4b06b515cb8a30a3a60ca054"
  },
  {
    "index": 35,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/888/s4S4eTvbvf.png",
    "file": "35-s4S4eTvbvf.png",
    "width": 338,
    "height": 79,
    "format": "PNG",
    "bytes": 3188,
    "sha256": "f599a6b8eca1df54f6143978e1a519acb27b2019e26cb30166921c5fec4c64f5"
  },
  {
    "index": 36,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/407/FMA6RHsbXW.png",
    "file": "36-FMA6RHsbXW.png",
    "width": 64,
    "height": 56,
    "format": "PNG",
    "bytes": 1197,
    "sha256": "102d8cceb1829545a86568e49ee55d42ab226f4b12c9e0e2f0e8879e073df651"
  },
  {
    "index": 37,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/682/cDeTK6X9NP.png",
    "file": "37-cDeTK6X9NP.png",
    "width": 242,
    "height": 123,
    "format": "PNG",
    "bytes": 4437,
    "sha256": "3ab1bc324863c6609a3bac694e0a1d359c85ba72bcfcdc999f0a61492922fbb9"
  },
  {
    "index": 38,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/620/SBSYkycx3T.png",
    "file": "38-SBSYkycx3T.png",
    "width": 659,
    "height": 132,
    "format": "PNG",
    "bytes": 9104,
    "sha256": "87a197ad906f1f4485d359ce7a415f02ab1d73a1df882297b160e7f8421f204c"
  },
  {
    "index": 39,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/682/3YSprsWGG5.png",
    "file": "39-3YSprsWGG5.png",
    "width": 270,
    "height": 188,
    "format": "PNG",
    "bytes": 6025,
    "sha256": "d487973ca2b3ad0012728bcb38bbc995a685b4a689e97630a04e0528f2354305"
  },
  {
    "index": 40,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/559/zgQJrXgsD8.png",
    "file": "40-zgQJrXgsD8.png",
    "width": 338,
    "height": 90,
    "format": "PNG",
    "bytes": 3301,
    "sha256": "52e658a7824238678cd242301fbeb24796cf1a8ae44064ad33e6fe553a944f06"
  },
  {
    "index": 41,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/573/zJA5aRGxsD.png",
    "file": "41-zJA5aRGxsD.png",
    "width": 235,
    "height": 239,
    "format": "PNG",
    "bytes": 6641,
    "sha256": "880a34f81e5f85ccc028f2ffa62fc99c6bec90bf59bb1985507d8090679b7c2a"
  },
  {
    "index": 42,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/165/WpxpCKwJz6.png",
    "file": "42-WpxpCKwJz6.png",
    "width": 709,
    "height": 249,
    "format": "PNG",
    "bytes": 14610,
    "sha256": "9a470b5f92c9717449a2bcbf8fd138c05e7a016f985ff568c1e9f4ae41a60afe"
  },
  {
    "index": 43,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/944/qSbdWtnqD9.png",
    "file": "43-qSbdWtnqD9.png",
    "width": 251,
    "height": 229,
    "format": "PNG",
    "bytes": 6725,
    "sha256": "54873036830381281eaa84524f56bda50f6532c06b472806e9ced6da70cb5360"
  },
  {
    "index": 44,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/512/ScXSkSXVD8.png",
    "file": "44-ScXSkSXVD8.png",
    "width": 177,
    "height": 188,
    "format": "PNG",
    "bytes": 5373,
    "sha256": "a051723bdff5e69842ff0f05097c7eef6b89f58762c20076af1ca634f8f6484a"
  },
  {
    "index": 45,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/6/sJcvZRkbs1.png",
    "file": "45-sJcvZRkbs1.png",
    "width": 317,
    "height": 190,
    "format": "PNG",
    "bytes": 8545,
    "sha256": "d749698a88fe1cda3aee38850de4e80b4b572ffc084c63c8e149928f41637799"
  },
  {
    "index": 46,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/958/Uk4LmtWkSg.png",
    "file": "46-Uk4LmtWkSg.png",
    "width": 146,
    "height": 181,
    "format": "PNG",
    "bytes": 5590,
    "sha256": "a3a94c3c1bd00c64a661e764ce2567fcad2dec1bcd15630381fb0f343829e887"
  },
  {
    "index": 47,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/262/KzHT9MCnAq.png",
    "file": "47-KzHT9MCnAq.png",
    "width": 371,
    "height": 180,
    "format": "PNG",
    "bytes": 10483,
    "sha256": "a945aba3de78cbae1187aa1fa28afaa8f50619643daa30913b4df3d693e58b28"
  },
  {
    "index": 48,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/988/FxwED9rQ6S.png",
    "file": "48-FxwED9rQ6S.png",
    "width": 934,
    "height": 337,
    "format": "PNG",
    "bytes": 49092,
    "sha256": "4e78667a7a65bd7fc42b4cf72e542ee3c2eb6502eacc8988a120d04da234d18b"
  },
  {
    "index": 49,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/732/6Qyp6PYzrt.png",
    "file": "49-6Qyp6PYzrt.png",
    "width": 997,
    "height": 90,
    "format": "PNG",
    "bytes": 6729,
    "sha256": "f78ae16229c34af4b3e5d1ddd7f013e5539af1376081824f02151baed14c6fce"
  },
  {
    "index": 50,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/708/STgVTEbzs2.png",
    "file": "50-STgVTEbzs2.png",
    "width": 612,
    "height": 162,
    "format": "PNG",
    "bytes": 15451,
    "sha256": "f2c913c7a7f3e3530282c12df57e0dfd9a4099849c87e58a02273372f4d973b1"
  },
  {
    "index": 51,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/687/USZenD86Ru.png",
    "file": "51-USZenD86Ru.png",
    "width": 513,
    "height": 140,
    "format": "PNG",
    "bytes": 8018,
    "sha256": "c990c04943ab39f6ce039bb94628a0fc9d0723111a4f2fe14473b8c06b8d9fb9"
  },
  {
    "index": 52,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/574/PsfHeUDrW7.png",
    "file": "52-PsfHeUDrW7.png",
    "width": 215,
    "height": 150,
    "format": "PNG",
    "bytes": 5981,
    "sha256": "d0cf618055da42559d919d844ed722a32e91c373ce44ceebe30d03c50e4a40a6"
  },
  {
    "index": 53,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/464/X6zqPt6vcB.png",
    "file": "53-X6zqPt6vcB.png",
    "width": 394,
    "height": 251,
    "format": "PNG",
    "bytes": 5961,
    "sha256": "70edcc0b57004506d185e177e2420a663026339901d9484e82d6d9062825aff1"
  },
  {
    "index": 54,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/365/sSmL3rL25H.png",
    "file": "54-sSmL3rL25H.png",
    "width": 467,
    "height": 441,
    "format": "PNG",
    "bytes": 23410,
    "sha256": "8c6007e96dbb515f8c1c493794cbd1f3a0b2da552dae77aab2354e9860cdbb5c"
  },
  {
    "index": 55,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/12/K3D4echweq.png",
    "file": "55-K3D4echweq.png",
    "width": 839,
    "height": 441,
    "format": "PNG",
    "bytes": 31496,
    "sha256": "ba7a319650f5a0622d0936b22fcd7662a5214d1d9ba426c9cdf697867a623987"
  },
  {
    "index": 56,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/341/VDFKsVqmC5.png",
    "file": "56-VDFKsVqmC5.png",
    "width": 337,
    "height": 134,
    "format": "PNG",
    "bytes": 16288,
    "sha256": "2ccd0ca9a091fdd8802eb4baeea0291660284b54a1df2556d6a67a683836921a"
  },
  {
    "index": 57,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/705/WMnmbNqC4a.png",
    "file": "57-WMnmbNqC4a.png",
    "width": 995,
    "height": 516,
    "format": "PNG",
    "bytes": 79935,
    "sha256": "9db9cbdd5b8c60dee26518d79fe13b58f4c8a9e0c27a27c77f74947dfbd7dbd7"
  },
  {
    "index": 58,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/216/WyF6XhFru4.png",
    "file": "58-WyF6XhFru4.png",
    "width": 316,
    "height": 128,
    "format": "PNG",
    "bytes": 7232,
    "sha256": "049c5e94264a780d2bb8f193b23cbc4adb0a37847e805e72893e6ac1bb2c0b9f"
  },
  {
    "index": 59,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/904/JcDEBmuLR2.png",
    "file": "59-JcDEBmuLR2.png",
    "width": 400,
    "height": 137,
    "format": "PNG",
    "bytes": 10445,
    "sha256": "26ef1c9742e03e80a15685384057c7c051fcb4e16b0b1a03815c703bdedace62"
  },
  {
    "index": 60,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/485/vVUQVJcZp8.png",
    "file": "60-vVUQVJcZp8.png",
    "width": 315,
    "height": 149,
    "format": "PNG",
    "bytes": 7259,
    "sha256": "b365af9bbc701ec46a5c983a42cf6b38d5a0b9733203d19afbeabb0c71114e75"
  },
  {
    "index": 61,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/218/6mDUjYxKEA.png",
    "file": "61-6mDUjYxKEA.png",
    "width": 876,
    "height": 228,
    "format": "PNG",
    "bytes": 25224,
    "sha256": "38851d2c2d8eacbf4c90826790fa63772ae1fa4389daef7ce6f3f72d601526d7"
  },
  {
    "index": 62,
    "lesson": "图",
    "chapter_id": "161708",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/101/KBK4MU5PXJ.png",
    "file": "62-KBK4MU5PXJ.png",
    "width": 415,
    "height": 378,
    "format": "PNG",
    "bytes": 16339,
    "sha256": "1f6e92b688c3dc056103f468dfae9b23db8a3de8fe7048b7d68c552457d1ee65"
  },
  {
    "index": 63,
    "lesson": "树",
    "chapter_id": "161707",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/339/5vPgpHwqvU.png",
    "file": "63-5vPgpHwqvU.png",
    "width": 427,
    "height": 318,
    "format": "PNG",
    "bytes": 16736,
    "sha256": "248754bb20c7d36354671b992ba0fc1cba38af79c91d6b238eae56117b40b00a"
  }
]