“spectral Doppler velocimetry, SDV”的概念、定义、翻译、参考文献-科学参考

单词	spectral Doppler velocimetry, SDV
释义	spectral Doppler velocimetry, SDV Encyclopedia 工学多普勒测速法释 spectral Doppler velocimetry, SDV光谱多普勒测速法专门应用于气体速度测量的方法。应是利用气体分子特征光谱的多普勒频移、展宽等效应，通过光谱分析（吸收光谱、荧光光谱或拉曼光谱），获得气体分子的速度和温度、压力等参量，光谱分析是非接触、快速的、直接测量方法，无须使用示踪粒子，测量准确度高。
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