4039| 18
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求教梯形螺紋高手 |
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點(diǎn)評(píng)
這是什么樣的螺紋�,。吭趺礇]有見過�,�,?主要是干什么用的啊,?
糾正下~車出來(lái)的只能是叫環(huán)面蝸桿或者直廓環(huán)面蝸桿,。2包要經(jīng)過帶有斜度的母平面磨削才可以算是2包
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