5242| 8
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這樣的螺紋需要熱處理么 |
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點評
轉(zhuǎn)不轉(zhuǎn)沒關(guān)系,有鍵擋著,蝸輪也不會轉(zhuǎn)了
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點評
噢,是螺旋傳動啊,不過一般不用普通螺紋M了,用梯形螺紋Tr的比較多
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本版積分規(guī)則
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