In this paper, author analysis the relation between transient characteristic and frequency characteristic, and a method regulating frequency characteristic of amplifier is put for-wand.

本文通过分析放大器瞬态特性和频率特性的关系，提出用瞬态测试法对放大器频率特性进行调试的方法。

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Technical measures of using emergency shut valve and selecting regulating frequency pump are put forward in this paper, assuring function elaboration and running reliability of the Shared system.

提出了采用紧急关闭水阀和合理选用变频泵等技术措施。为共用系统的功能发挥和运行可靠提供了保障。

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This paper discusses the slip frequency control of variable frequency regulating speed system, and analyses the shortage of this control way.

本丈对转差频率控制的变频调速系统进行讨论，分析这种控制方式所存在的不足；

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Over the years, the government has taken steps to address the problem, including regulating low-frequency noise like water pumps, and reducing maximum decibels.

BBC: Taiwan's noise pollution dilemma