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發(fā)布時(shí)間: 2017-6-22 11:23
正文摘要:請(qǐng)教各位大神,,這個(gè)表格中的性能等級(jí)是指螺栓強(qiáng)度嗎?比如強(qiáng)度為6.8的M22螺栓,,它的夾緊力,、施加扭矩該怎么查? |
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