A、Ra0.8 B、Ra0.1 C、Ra0.08 D、Ra0.012
A、泄露 B、振動異常 C、偶發(fā)故障 D、規(guī)律性故障
A、飛濺潤滑 B、壓力潤滑 C、滴油潤滑 D、油環(huán)潤滑