“density measurement with shadow method”的概念、定义、翻译、参考文献-科学参考

单词	density measurement with shadow method
释义	density measurement with shadow method Encyclopedia 工学阴影法测量密度释 density measurement with shadow method阴影法测量密度利用光在被测流场中的折射率梯度变化（二阶导数）正比于流场气体密度的原理进行密度测量的方法，主要用于高速流场的定性研究。又称傅科刀口法，在光学中是最为简单的一种测量方法。
随便看	water-saving society water scooter water seal water security water self-purification water sensitive urban design watershed watershed adaptive management watershed area watershed eco-hydrological process watershed ecological processes watershed ecology watershed ecosystem watershed ecosystem health watershed ecosystem management watershed ecosystem service watershed environmental planning watershed evolution watershed hydrological model Watershed improvement watershed management watershed management in mountain watershed managementlaw watershed management planning of ancient Dongting Lake in China watershed non-point source pollution

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