2755| 6
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等pv值止推滑動(dòng)軸承端面曲線(xiàn)的推導(dǎo) |
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點(diǎn)評(píng)
是的,,僅僅是理論推導(dǎo),,跟具體應(yīng)用暫時(shí)還是兩碼事。
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