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xueren

the thread profile are rounded off equally at crests and roots by circular arcs blending tangentially with the flanks in such a manner as to give the same thread height h as for parallel threads.
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提交时间:2007/10/11 16:24:00

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草鱼

螺纹就是由不相干的圆弧象平行线一样间隔着相同的牙高环绕在牙顶和牙底上.

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改译

2007/10/11 19:13:00

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