{
  "name": "单位换算练习 - 集盒",
  "short_name": "单位换算练习",
  "description": "小学单位换算专项：长度、重量、时间、人民币、面积、体积容积六大类，含大化小、小化大、比较大小、复合单位换算、换算后计算五种题型，即时批改、错题回收、可打印题卷。数据纯本地、不上传。",
  "lang": "zh-CN",
  "dir": "ltr",
  "start_url": "/tool/unit-drill",
  "scope": "/",
  "display": "standalone",
  "display_override": [
    "standalone",
    "minimal-ui"
  ],
  "orientation": "portrait",
  "background_color": "#007AFF",
  "theme_color": "#007AFF",
  "categories": [
    "utilities",
    "productivity"
  ],
  "icons": [
    {
      "src": "/icons/icon-192.png",
      "sizes": "192x192",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "/icons/icon-512.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "/icons/icon-maskable-512.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "maskable"
    }
  ]
}