Hence the analysis of the noise, influential factors and method of control is necessary.
因此有必要对噪声产生的机理，影响因素和控制方法进行分析和探讨。
Throughmultiple factor analysis the main influential factors were found.
通过多因素分析，找出了主要影响因素。
Throughmultiple factor analysis the main influential factors were found.
通过多因素分析，找出了主要影响因素。
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