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2螺母设计与计算······················································································································6
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¢及螺纹工作圈数u······································································6
求螺母高度H¢································································································7
螺纹工作圈数u·····························································································7
螺母实际高度H¢····························································································7
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3托杯的设计与计算··················································································································8
4手柄设计与计算······················································································································9
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