The accuracy of the dielectric loss measurement based on harmonic analysis algorithm is greatly influenced by the frequency fluctuation.

用谐波分析法进行介损测量时，很容易受到系统频率波动的影响，从而降低测量的准确度。

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For uniform time sampling, the level of frequency fluctuation will greatly influence the results of spectrum analysis.

采用等时隙采样方法，频率随机波动的大小则会严重影响谱分析的结果。

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Results show that the frequency spectrum characteristics of arc diffluence is accordance to jet fluctuation. Arc diffluence in the new gun is confined obviously.

试验结果表明，电弧分流和射流脉动的频谱特性是一致的，在使用新等离子体喷枪时，电弧分流明显得到了限制。

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