Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.

晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。

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Of lowermost safety standard is pair of cost - a of benefit analysis method main environmental complement factor.

最低安全标准＂是对成本-效益分析方法的一个重要的环境补充因素。

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The paper presents the method of ie, accords with the application of EE to mould manufacturing, and discusses on promoting efficiency, ensuring quality, reducing cost, man - made factor, and so on.

概括了工业工程的方法，并针对在模具生产中的运用，从提高效率、保证质量、降低成本、人为因素等诸多方面展开讨论。

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