With the increase of soil depth, daily variation amplitude of soil temperature decreases.
随着土壤深度的增加，地温日变幅逐渐减小。
Incorporating of multiple design means such as modularization, amplitude equalization and temperature control, the transmitter has high reliability and strong environment adaptability.
该发射机通过采用模块化、幅度均衡、温度控制等设计手段，使之具有较高的可靠性及环境适应能力。
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。
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