2053| 7
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有人認(rèn)識(shí)這種螺紋嗎,? |
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點(diǎn)評(píng)
謝謝,,英制好像也查不到這樣子的。
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點(diǎn)評(píng)
對(duì),,可能是這種了
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點(diǎn)評(píng)
ACME 角度是29°。樓上應(yīng)該是正解,。
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