4026| 11
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減小摩擦的表面處理方法,。 |
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點(diǎn)評(píng)
選用摩擦系數(shù)大的材料配合;較大的表面粗糙度,。
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點(diǎn)評(píng)
改打鐵做碼農(nóng)^ _ ^
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