Time Ratio Determines the relative time scale of the noise frequencies.
时间比确定噪声频率的相对时间尺度。
The time scale is obtained through the self correlation coefficient of the sound wave. It is clear that the time scale is inverse ratio to the jet velocity under the same gas velocity.
通过自相关系数测量火焰涡团的特征反应时间，结果表明：相同的燃气流量下，特征反应时间与射流速度成反比；
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