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原帖由 <i>zhangcad</i> 于 2006-11-6 09:50 发表<br />: Q* D \0 i& @% ?8 m j- V3 q L M27:螺纹公称直径<br /> 9 y1 [; `8 I5 e0 BP2:螺纹螺距<br />2 ?3 h% N: [3 M 6h:螺纹尺寸公差等级<br /> ( H- k6 s7 G' E# iLH:螺纹旋向(LH:左旋 RH:右旋)
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