理论预期，在一定条件下，当激光流接近饱和流时，激光输出比例于弛豫速率。
It is expected that the laser output will be directly proportional to the relaxation rate under a given condition when the laser flux is near saturation.
简述了激光多普勒测速及流场显示原理；
The principle of Laser Doppler Velocimetry and the method of showing the fluid field are briefly introduced.
利用激光测速技术测量了平板水平放置时气泡流最外缘处的水平速度及厚度。
The horizontal velocity at the outermost edge and thickness of bubbly flow are measured by laser Doppler velocity technique.
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