[
  {
    "field": "image_name",
    "description": "图纸或样本的唯一标识名称，通常与文件名一致。"
  },
  {
    "field": "conversation",
    "description": "问答对数组，每个元素包含一个问题、答案及难度等级，反映对图纸内容的理解与解析。"
  },
  {
    "field": "conversation.question",
    "description": "针对图纸内容提出的问题，涵盖材料、尺寸、参数、标准等方面。"
  },
  {
    "field": "conversation.answer",
    "description": "对相应问题的详细解答，依据图纸内容给出。"
  },
  {
    "field": "conversation.difficulty",
    "description": "问题的难度等级，分为Easy、Medium、Hard，用于区分问题复杂度。"
  },
  {
    "field": "slice_name",
    "description": "切片图片文件名（由检测框裁剪得到），通常形如 {原图名}_det_XXX.jpg。"
  },
  {
    "field": "detection",
    "description": "检测API返回的单个目标信息（原样保留），用于描述该切片对应的检测框与类别等。"
  },
  {
    "field": "detection.xyxy",
    "description": "目标检测框坐标，[x1, y1, x2, y2]，对应原图像素坐标系。"
  },
  {
    "field": "detection.conf",
    "description": "检测置信度分数（0-1）。"
  },
  {
    "field": "detection.cls",
    "description": "检测类别ID（整型或可转整型）。"
  },
  {
    "field": "detection.name",
    "description": "检测类别名称（字符串）。"
  }
]