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2020-01-14View Original

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Reply #22020-01-14

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Reply #32020-01-14

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Reply #42020-01-14

*\n1. 布置图尺寸标注的封闭意义何在\n*\n\n *2. 设备布置图中，在标注设备尺寸时，化工部标准样图中在连续标注后会留下最后一个尺寸，而标上一个总尺寸，为什么不可以各个尺寸都标注后再标注一个总尺寸？\n*\n\n * 3. 图中标注尺寸部分是要确保符合该尺寸要求的，实施过程中尺寸是有误差的，各个尺寸都要保证尺寸精度（在规定误差范围内），由于误差积累问题，总会有一个尺寸无法保证精度，所以要留一个尺寸不标注（或标注一个大致尺寸并用括号括起来）。\*\n\n * 4. 尚说，空出来的那个尺寸只是为了保证施工。但现在图画出来的时候标注的都能到准确数字了呀。\*\n\n * 5. 没多少实际意义，封闭起来也没关系。\*\n\n

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