This article utilizes the systematical safety engineering project in principle, study on the method and principle of the safe control and the concrete measures on the basis of safe ratings evaluation.
文章运用安全系统工程的有关理论和方法，在安全分级评价的基础上进行安全控制的方法、原则以及具体措施的探讨。
On the basis of battery charger principle and each kind of charge method study in the present, the article proposed the advanced variable current charging method.
本文在对蓄电池充电机原理和目前各种充电方法研究的基础上，提出了改进型变电流间歇快速充电方法。
Based on analyses and study of the working principle of strain gauge balances, the method was introduced in this paper for structural and electric design of the calibration system.
本文通过对应变天平测量原理的分析研究，提出了风洞应变天平结构和电气的设计方法，详细介绍了自动天平校准设备的系统构成、主要性能和技术指标。
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