目前水闸工程结构设计所采用的设计准则仍为单一安全系数法，该方法不能定量、科学地反映水闸工程的可靠性。
Single safety coefficient method is still the design criterion of sluice engineering structure presently, but will not present reliability of sluice in a quantitative and scientific way.
常规的钻探机械零件设计方法即安全系数法并不能回答其产品的安全性问题。
The ordinary design method for drilling machine parts-safe coefficient method can not ensure the safety of the product.
应力指数法和疲劳强度减弱系数法是进行疲劳容器设计的重要方法。
Stress index method and fatigue strength weakened coefficient method are important methods for designing fatigue vessel.
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