基本解释[机] 轴承润滑脂英汉例句双语例句Self-repair of micron copper powder in greases was investigated by way of friction test and service life of bearing test.通过四球试验，考察了微米铜粉在润滑脂中的摩擦学行为和抗磨性。bearing grease更多例句词组短语短语Sapphire Bearing Greases 蓝宝石润滑油脂bearing grease更多词组