4850| 16
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關(guān)于一個機(jī)械制動的問題 |
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點(diǎn)評
明白人,!
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點(diǎn)評
保證好潤滑,,計(jì)算好渦輪承受力。一般來說還是比較穩(wěn)定的機(jī)構(gòu)的
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