cad怎么标注尺寸

[[{"txt": "\u4eca\u5e74\u6765\uff0ccad\u7684\u5f00\u53d1\u8ba9\u6211\u4eec\u7684\u751f\u6d3b\u66f4\u52a0\u7684\u7b80\u4fbf\u3002\u5728\u8bbe\u8ba1\u56fe\u7eb8\u4e0acad\u8f6f\u4ef6\u53ef\u4ee5\u8f7b\u677e\u7684\u7ed8\u753b\u51fa\u5e73\u9762\u56fe\uff0c\u548c\u4e09\u7ef4\u56fe\u3002\u90a3\u4e48\uff0ccad\u8981\u600e\u4e48\u53bb\u6807\u6ce8\u5c3a\u5bf8\u5462\uff1f\u4ee5\u4e0b\u4e3a\u6211\u6574\u7406\u7684\u7ecf\u9a8c\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\u3002\u00a0"}], [{"txt": ["\u5de5\u5177/\u539f\u6599"]}, {"txt": "\u7535\u8111\uff0ccad\u8f6f\u4ef6"}], [{"txt": ["\u6807\u6ce8\u57fa\u672c\u79cd\u7c7b\u53ca\u65b9\u6cd5"]}, {"txt": "\u7ebf\u6027\u6807\u6ce8\uff1a\u6b64\u7c7b\u6807\u6ce8\u53ef\u4ee5\u6807\u6ce8\u51fa\u6c34\u5e73\u65b9\u5411\u548c\u7ad6\u76f4\u65b9\u5411\u6216\u6307\u5b9a\u65b9\u5411\u4e0a\u7684\u5c3a\u5bf8\u6807\u6ce8\u3002\u5148\u521b\u5efa\u4e00\u6761\u7ebf\uff0c\u7136\u540e\u6267\u884c\u7ebf\u6027\u6807\u6ce8\u547d\u4ee4\u3002\u62fe\u53d6\u7ebf\u7684\u4e00\u7aef\uff0c\u518d\u62fe\u53d6\u53e6\u4e00\u7aef\u3002\u6307\u5b9a\u5c3a\u5bf8\u7ebf\u7684\u4f4d\u7f6e\u5c31\u53ef\u4ee5\u4e86\u3002\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/d2001d7de137c9768018b47144672b5fd4462b39.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u5bf9\u9f50\u6807\u6ce8\uff1a\u6307\u5c3a\u5bf8\u7ebf\u4e0e2\u5c3a\u5bf8\u754c\u7ebf\u7684\u8d77\u59cb\u70b9\u8fde\u7ebf\u76f8\u5e73\u884c\u3002\u4e0e\u7ebf\u6027\u6807\u6ce8\u7684\u65b9\u6cd5\u662f\u4e00\u6837\u7684\u3002\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/ce26355fd546059610b03d643e03c8d247fe2539.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u57fa\u7ebf\u6807\u6ce8\uff1a\u57fa\u7ebf\u7528\u4e8e\u4ee5\u7b2c\u4e00\u4e2a\u6807\u6ce8\u7684\u7b2c\u4e00\u6761\u754c\u7ebf\u4e3a\u57fa\u51c6\uff0c\u8fde\u7eed\u6807\u6ce8\u591a\u4e2a\u7ebf\u6027\u5c3a\u5bf8\u3002\u6bcf\u4e2a\u65b0\u5c3a\u5bf8\u7ebf\u5c06\u81ea\u52a8\u504f\u79fb\u4e00\u4e2a\u4ee5\u907f\u514d\u91cd\u53e0\u3002\u5148\u753b\u4e00\u6761\u591a\u6bb5\u7684\u7684\u7ebf\u6bb5\u3002\u7136\u540e\u7528\u7ebf\u6027\u6807\u6ce8\u6807\u6ce8\u7b2c\u4e00\u6bb5\u7ebf\uff0c\u7136\u540e\u6362\u6210\u57fa\u7ebf\u6807\u6ce8\u6807\u6ce8\u5269\u4e0b\u7684\u7ebf\u6bb5\u5c31\u53ef\u4ee5\u4e86\u3002\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/c99358fe474ec2839c1bf25bbe4f50b8b53e1c39.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u8fde\u7eed\u6807\u6ce8\uff1a\u8fde\u7eed\u6807\u6ce8\u662f\u4ee5\u524d\u4e00\u4e2a\u6807\u6ce8\u7684\u7b2c\u4e8c\u6761\u754c\u7ebf\u4e3a\u57fa\u51c6\uff0c\u8fde\u7eed\u6807\u6ce8\u591a\u4e2a\u7ebf\u6027\u5c3a\u5bf8\u3002\u5207\u8bb0\uff0c\u5728\u4f7f\u7528\u8fde\u7eed\u6807\u6ce8\u7684\u65f6\u5019\uff0c\u4e00\u5b9a\u8981\u5148\u521b\u5efa\u4e00\u4e2a\u7ebf\u6027\u3001\u5750\u6807\u6216\u8005\u662f\u89d2\u5ea6\u5750\u6807\u3002\u6b64\u7c7b\u7684\u65b9\u6cd5\u4e0e\u57fa\u7ebf\u6807\u6ce8\u7684\u65b9\u6cd5\u662f\u4e00\u6837\u7684\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/340e4eb8b43ea8dbe2ee3386189c2cf7deb21639.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "END"}], [{"txt": ["\u6ce8\u610f\u4e8b\u9879"]}, {"txt": "\u672c\u6587\u539f\u521b\uff0c\u56fe\u7247\u6765\u6e90\u4e8e\u7f51\u7edc\u3002\u672a\u5f97\u672c\u4eba\u5141\u8bb8\uff0c\u8bf7\u52ff\u8f6c\u8f7d\u3002\u5982\u679c\u559c\u6b22\u672c\u7ecf\u9a8c\uff0c\u8bf7\u6536\u85cf\u4ee5\u4fbf\u4e0b\u6b21\u89c2\u770b\u3002\u5982\u679c\u5bf9\u672c\u4eba\u5176\u4ed6\u7ecf\u9a8c\u6709\u5174\u8da3\uff0c\u8bf7\u52a0\u5173\u6ce8\u3002\u4ee5\u4fbf\u53ca\u65f6\u4e86\u89e3\u6211\u7684\u7ecf\u9a8c\u52a8\u6001\u3002\u00a0"}]]