螺紋谷 的英文怎麼說
中文拼音 [luówéngǔ]
螺紋谷
英文
groove of thread-
Forming taps which produce no burrs since the chamfer is created by not tilting at the root of the tap and by continuously changing the width of the root this enables manufacture of the superfine pointed miniature thread so. 5 1. 25 , hitherto considered impossible
由於絲錐倒牙部的谷底沒有傾斜和有持續變化的谷底寬度,抑制了毛刺和髭須發生的擠壓絲錐,以往不可能製作的微型內螺紋用絲錐也能製作。
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