Wears performance of mechanic face seal is analysed. Basis law for design and estimation and amelioration of mechanic seal's invalidation is provided.
作者对机械密封端面的磨损特性进行了分析，以指导和改进机械密封的设计及对密封失效的判断。
It is pointed that with rock asphalt content increasing, its effectives wears off. When content increases from 20% to 25%, performance of mixture has little change.
研究认为，随着岩沥青掺量的增加，其对混合料路用性能的影响逐渐减弱，当掺量由20%增加到25%时，性能变化很小。
The Traditional EDM can achieve stable discharging but the electrode wears dramatically, which decreases the EDM milling performance.
液中电火花铣削加工时相对稳定，但电极相对损耗严重，妨碍了电火花加工性能的提高。
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