问题是通常采用的位移测振仪所记录的制动反应，其初始波形有畸变现象，这一现象严重地影响了分析的准确性。
In the analysis we found there exists the distortion of the wave form in initial part of the record obtained from the vibrometer.
通过控制原料煤水分，研究了煤的初始水分含量对其液化反应性的影响；
The effects of the initial water content of coal on liquefaction reactivity were studied by controlling the coal initial water content.
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