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怎樣說服工人自信的尺寸也必須檢驗(yàn)? |
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點(diǎn)評
要在設(shè)計壽命內(nèi)穩(wěn)定運(yùn)行,靠機(jī)加工的多幾絲少幾絲影響沒那么巨大。材料、熱處理、裝配、潤滑條件、使用工況起決定作用
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