Flush and drain system and install orifice plates.
冲洗并放净管道系统，然后安装孔板。
It's no coincidence that orifice plates are still the most popular flow technology.
这不是偶然的孔板仍然是最流行的流技术。
The results concerning fluctuating loads on orifice plates and diffusion chamber walls are given as well.
对孔板和扩散室管壁脉动荷载的试验研究成果也作了简要介绍。
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