The raw materials and the pretension method are improved.
对原材料和预张拉方法进行改进。
A pretension method for major diameter bolts using hydraulic stretching equipment is introduced.
介绍了一种大直径螺栓的预紧方法液压拉伸预紧法。
The picking up method, meaning and clearing of failure codes of the electronic seat belt pretension unit are introduced, and precautions in troubleshooting are pointed out.
介绍了电子式安全带预紧装置故障代码的提取方法、故障代码的含义及故障代码的清除，并指出了检修时应注意事项。
It is quite complex and difficult to simulate bolt pretension accurately in the analysis of bolt joint by finite element method.
在螺栓联接的有限元分析中准确模拟螺栓的预紧力是一项复杂而困难的工作。
Finally the influence of pretension force to bolt fatigue life is studied and the method that extends the bolt life is proposed.
并研究了螺栓预紧力对螺栓疲劳寿命的影响，提出了延长螺栓寿命的方法。
The criterion for the determination of the pretension of bicycle spokes and a correct design method of their diameter are given according to the principles of mechanics.
介绍角接触球轴承预紧的类型及工作原理 ，给出了预紧选择原则和确定预紧力的计算方法。
The criterion for the determination of the pretension of bicycle spokes and a correct design method of their diameter are given according to the principles of mechanics.
介绍角接触球轴承预紧的类型及工作原理 ，给出了预紧选择原则和确定预紧力的计算方法。
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