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原帖由 <i>zhangcad</i> 于 2006-11-6 09:50 发表<br /> ; D4 E! d, ^1 y5 U0 h% A/ n LM27:螺纹公称直径<br /> 9 ^# Z) ^' n6 jP2:螺纹螺距<br /> # r" Q9 A7 J/ _+ h9 J, Z8 i; j6h:螺纹尺寸公差等级<br />% W/ {$ d' Z* ?: A* R H$ U; k6 U& T, F LH:螺纹旋向(LH:左旋 RH:右旋)
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