常見例句External motoroil pump enable good ventilatingcooling conditions,safety operationprolonged service life. 由於電機(jī)、油泵外置,其通風(fēng)冷卻條件好,運(yùn)行安全,壽命長。regular motoroil 普通發(fā)動機(jī)潤滑油 返回 motoroil