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原帖由 <i>zhangcad</i> 于 2006-11-6 09:50 发表<br />3 Z3 c3 r5 Q4 ?8 S M27:螺纹公称直径<br /> ; z. `% t, h3 H5 N, N! ?P2:螺纹螺距<br />' k7 U V3 C z2 @6 s 6h:螺纹尺寸公差等级<br />5 C; s9 l$ B" p$ O1 ^( Z! G( c LH:螺纹旋向(LH:左旋 RH:右旋)
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