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介绍一个已成功地运转在实验室中、能识别流向的多普勒测速装置。该装置以旋转的衍射光栅来分束和产生光频移动。对一个小型实验水洞进行了测量,能良好地跟踪流体速率的变化和灵敏地辨别流速方向。
Describe a Doppler velocimetry device that has been successfully operated in a laboratory and can identify flow. The device splits with a rotating diffraction grating and produces optical frequency movement. A small experimental water hole was measured to well track changes in fluid velocity and to discern flow direction sensitively.