Popularizing and applying frequency converter technology is one of the important methods of the prompting the industry advance.

进一步的推广应用变频调速技术，是推动我国工业技术进步的重要举措之一。

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The theory of AC frequency modulation for motor speed regulation technology, its applied procedure and actual effect in dedusting fan of converter are stated.

介绍了交流变频调速技术的原理、在转炉除尘风机上的实施过程和使用效果。

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This article introduces a technology of time amplifier based on frequency converter. It can be used for phase detection of sine period signal or determination of time delay.

本文介绍一种基于频率变换的时间放大技术，可用于正弦周期信号的相位精确测量或延迟时间测量。

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