Temperature measurement principle and modulation absorption spectroscopy were introduced, and the influence of modulation amplitude on gas temperature measurement was analyzed.
介绍了温度测量及调制吸收光谱技术原理，分析了调制幅度对气体温度测量的影响。
Among various factors affecting the amplitude of seismic record, wavefront divergence and absorption are the key ones, except reflected coefficients.
在影响地震波振幅的诸多因素中，除反射系数外，最主要的是波前扩散和吸收的影响。
Theoretical and practical results indicate that the method can compensate quite desirably the amplitude attenuation due to spherical divergence and earth absorption.
经过理论试算和实际处理表明，本方法能较好地消除球面发散和大地吸收对振幅的影响。
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