无触点设计的计步方式，使其理论使用寿命达到无限次。
A step counting mode without contact points ensures that the service life on theory is infinite.
对提高窑炉设计及施工精度，延长使用寿命有较高的理论和实际价值。
It is of great practical value to improve kiln design and construction precision, prolong service life.
本文运用系统仿真的原理结合可靠度理论分别研究了钢筋混凝土桥梁在整体腐蚀和局部腐蚀及裂缝扩展组合效应下使用寿命及其可靠性。
Service-lifetime and reliability is estimated considering two models of uniform corrosion with effect of cracks and local corrosion on the theoretic of system simulation and reliability.
在实验数据和理论公式相结合的基础上对格栅蠕变行为进行外推，这是预测格栅的长期使用寿命的方法之一。
One of predicting methods of is to extrapolate its creep behavior based on the combination of testing data and theory formula.
该研究结果对于现场提高钻柱的平均使用寿命具有重要的工程理论指导意义。
It is significant for adjusting drill pipe sequence to improve average life of drill string.
此外，基于现有混凝土氯离子扩散模型对CRC结构在氯离子环境下的使用寿命进行了理论评估。
Furthermore, the service life of CRC structures in chloride environment was evaluated theoretically by adopting the chloride diffusion model in concrete.
对液压系统的油液污染实施控制，对提高系统工作的可靠性，延长液压元件的使用寿命提供了理论依据．。
Optimum control of oil fluid contamination in hydraulic system is provided to theoretical basis for improving functional reliability of the system and increasing service life of hydraulic components.
为提高模具的使用寿命、优化模具表面结构提供了理论依据。
The result of the research here can provide reference for improving the life of hot forging die and optimizing the structure of surface of die.
同时，依据共振疲劳损伤寿命理论确定叶冠的最佳间隙值，来增加使用寿命。
According to the resonant fatigue-damage life theory, the optimum clearance between neighboring shrouds is determined to increase the service life.
用有限寿命理论从计算及测试两方面对翻车机强度进行了研究，并计算出其使用寿命。
According to the finite life theory. this paper studies the strength of dumping car from calculation and testing, and calculates its operating life.
基于可靠性理论和风险-效益理论，以安全可靠指标以及经济优化为控制条件，即结构在满足安全可靠指标的情况下获得的净效益最大，计算既有结构的优化剩余使用寿命；
On the basis of the reliability and hazard-benefit theory, the residual service life of existing structure can be given taking into account the safe reliability and economic optimization.
通过试验和理论分析厚、扁螺母在紧固过程中的受力情况，并从试验结果得到一个较合理的厚螺母拧紧力矩，既能保证塔式起重机的安全运行，又能延长螺栓的使用寿命。
Changing the positions of thin and thick nuts and using the right thick nut tightening torque ensure safe operation of the crane and longer lives of the screws.
这是一种全新的观点，它为进一步提高抛丸叶片的使用寿命提供了重要的理论依据。
This is a new point which provided a new way to prolong the life of the vane.
综合断裂分析和运用统计的结果，给出了裂纹活塞运用的临界尺寸，从而为延长柴油机的使用寿命提供了理论依据。
After summing up the results of fracture analysis and practical statistics, the critical crack size of the cylinder liner is determined. It may serve as a theoretic...
为了提高沥青路面使用寿命，本文从理论上进行了分析研究。
The results show that the horizontal loads have a big influence on pavement structure within 8 cm.
为了提高沥青路面使用寿命，本文从理论上进行了分析研究。
The results show that the horizontal loads have a big influence on pavement structure within 8 cm.
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