... assurance company 保险公司 life assurance n. 人寿保险；（保险公司付给的）人寿保险金；（被保险人缴纳的）人寿保险费 assurance coefficient 安全系数，保险系数；保证系数 ...
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Yet if the assurance coefficient is too big, it will happen that material's uneconomic use and hook's ponderosity.
而安全系数过大，又造成制作材料的浪费和吊钩的粗笨。
The select of assurance coefficient is a problem that is often met in mechanical design. How to reasonably select it is a basic subject.
安全系数的选取是机械设计中普遍遇到的问题，合理选取安全系数是机械设计中的一项基本课题。
The roof management, roof pressure computing, assurance coefficient checking are introduced. Three kinds of protecting methods of working face management are expounded.
从顶板管理、顶板压力计算、 安全系数校核方面进行了介绍，并且在大倾角工作面三防措施管理方面进行了详细的阐述。
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