Flush and drain system and install orifice plates.

冲洗并放净管道系统，然后安装孔板。

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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。

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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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