1·The wear of piercing punch is one of main die lose efficacy.
冲孔凸模磨损是模具失效的主要形式之一。
2·The consequence caused by crane's metal structure to lose efficacy is very serious.
门机金属结构的失效事故，后果往往非常严重。
3·Analytical method of bearing lose efficacy and the key point of bearing lose efficacy of mine machinery are introduced.
介绍轴承失效分析方法及煤矿机械轴承失效分析侧重点。
4·The volume table for oil storage tank will lose efficacy after a period of usage due to factors like foundation deformation.
由于地基变形等原因，地下储油罐使用一段时间后罐体的变位会导致原标定的罐容表失效。
5·During operation, the seal of cover found always broken, Created seal to lose efficacy and influence on normal work of preheater.
在使用中其底益密封经常发现垫子破损，造成密封失效，严重影响预热器的正常工作。
6·This paper calculates reliability index, lose efficacy probability and safety coefficient corresponding to the width of different barrier pillar.
并计算了与防水煤柱有关的可靠度指标、失效概率和安全系数。
7·When sand sinking pools are full and lose efficacy, the method of "digging out sands to wait for deposition" can increase the life of irrigation region.
当沉沙池淤满，失去自流沉沙作用时，采用“以挖待沉”可以延长灌区运行年限，但没有扬水沉沙方案优越。
8·This paper analyses the reason of piston blind nut of air compressor lose efficacy, and intronduces the method to prevent piston blind nut lose efficacy.
分析空气压缩机活塞帽脱扣原因 ，并介绍一种防止脱扣的方法。
9·The real reason of mine machinery bearing lose efficacy by these analytical methods can be found, in order to reduce the fault of machinery and all kinds of losses.
通过这些分析方法以利于找出煤矿机械轴承失效真正原因，以便进一步减少机械事故和各种损失。
10·Import license should be used within the term of validity. If it exceeds the time limit, it will lose efficacy automatically, and the customs will not grant clearance.
进口许可证应当在有效期内使用，逾期自行失效，海关不予放行。