Based on the site investigation and testing, summary and evaluation of the harmonic characteristics of typical nonlinear loads, and the effective solutions of harmonic elimination are presented.

结合现场调研测试，总结评估了典型非线性负载的谐波特性，并给出谐波治理的有效方案。

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This research experienced on the process of on-the-spot investigation, testing and assessment analysis, confirming scheme of modification, installing and debugging and on-site experiments.

该项研究，经历了从现场调研、测试评价分析、确定改造方案、安装调试及现场试验等研究过程。

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The wave velocity test of longitudinal and transverse waves in the construction site was one of the in-situ testing methods that was effective in engineering investigation in recent years.

工程场地纵、横波波速测试是近年来在工程勘察中取得一定效果的原位测试方法之一。

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