四球机试验结果表明含氮硼酸酯添加到基础油中，能显著提高其抗磨性能，且添加量存在一个最佳值。
The result shows that the anti_wear performance is increased significantly and the amount of addition has an optimum value.
通过四球试验，考察了软金属微米铜粉在润滑脂中的摩擦学行为和抗磨性。
The tribological properties and the anti-wear of micron coppers inside greases were investigated by four-ball test.
通过试验得出：采用该方法修复的轴承其抗磨性、减磨性得到了良好的改善，承载能力有较大地提高，起到了强化修复作用。
The experiment shows that the bearing restored by this method with simple process, convenient operation, low cost, high efficiency has improved for its anti abrasion and its carrying capacity largely.
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