{
  "contract_hash": "a678ddef79ff62c5acb4b4eb9f971bd99419b5ac1e2b99f978095f889885b7fa",
  "requirements": [
    {
      "acceptance_claims": [
        {
          "claim_id": "claim_001",
          "claim_kind": "solid_count_equals",
          "expected": {
            "value": 1
          }
        },
        {
          "claim_id": "claim_002",
          "claim_kind": "single_connected_body",
          "expected": {}
        },
        {
          "claim_id": "claim_003",
          "claim_kind": "through_cylindrical_bore",
          "expected": {
            "count": 3,
            "diameter_mm": 12,
            "tolerance_mm": 0.1
          }
        },
        {
          "claim_id": "claim_004",
          "claim_kind": "collinear_through_bore_chain",
          "expected": {
            "adjacent_distances_mm": [
              60,
              80
            ],
            "diameter_mm": 12,
            "tolerance_mm": 0.1
          }
        },
        {
          "claim_id": "claim_005",
          "claim_kind": "bbox_dimension_mm",
          "expected": {
            "axis": "z",
            "tolerance_mm": 0.1,
            "value": 10
          }
        },
        {
          "claim_id": "claim_006",
          "claim_kind": "bbox_rank_dimension_mm",
          "expected": {
            "rank": "minimum",
            "tolerance_mm": 0.1,
            "value": 10
          }
        },
        {
          "claim_id": "claim_007",
          "claim_kind": "outer_cylindrical_surface",
          "expected": {
            "axial_span_mm": 10,
            "count": 3,
            "diameter_mm": 32,
            "tolerance_mm": 0.1
          }
        },
        {
          "claim_id": "claim_008",
          "claim_kind": "visual",
          "expected": {
            "description": "三个孔周围的外轮廓应平滑连接，形成连续的连杆外形，不应出现断开或尖锐折线。"
          }
        }
      ],
      "assumptions": [
        "将“外圆直径32毫米”理解为每个孔对应的外部圆形轮廓特征直径。"
      ],
      "draft_id": "draft_001",
      "requirement_id": "req_001",
      "source_ids": [
        "src_001"
      ],
      "statement": "生成一个三孔机械连杆，三个孔中心共线，相邻孔中心距分别为60毫米和80毫米，连杆厚度10毫米，每个孔周围具有直径32毫米的外圆特征，外轮廓各段平滑过渡连接。"
    }
  ],
  "schema_version": "cad.requirements-contract.v1",
  "task_id": "cad_f33e5741666b"
}