端面密封片启闭不泄漏，机械性能可靠。
S end face sealing piece on-off not leak, mechanical properties and reliable.
选择给水用管道的原则是：物理机械性能良好，强度高，保证连续、安全、可靠供水；
The criteria of pipe selection include good physical and mechanical properties, high intensity, and sustaining and water supply reliable.
复合材料的机械性能与加工制造等过程密切相关，其材料性能的离散度较大，因此考虑不确定性因素的结构可靠性分析非常必要。
The mechanical properties of composite materials are correlated with the manufacturing process, and their diversity is generally larger than that of metals, so the reliability analysis is important.
检测了西门子加速器的物理性能和机械性能，结果表明，KD2型加速器具有稳定和可靠的特性。
Physical and mechanical parameters are measured on medical linear accelerator. The results indicate that KD2type accelerator is characterized by its stable output style and its good reliability.
本发明无铅高温焊料的优点为：熔点较高、机械性能好、焊接缺陷少、焊接可靠性高。
The lead free high temperature solder has the advantages of higher melting point, good mechanical property, less welding defect and high welding reliability.
由于其工作载荷复杂多变，因此其机械性能、安全可靠性等备受关注。
Because of its complex and changing work loads, its mechanical properties, such as security and reliability, receive much concern.
由于其工作载荷复杂多变，因此其机械性能、安全可靠性等备受关注。
Because of its complex and changing work loads, its mechanical properties, such as security and reliability, receive much concern.
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