Sheldon - They make up a non-Newtonian fluid, which is liquid, but solid under the percussive action of the speaker.

谢尔顿—它们组成了非牛顿流体。是一种液体，但是在喇叭的冲击作用下就成了固体。

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Barrier fluid reservoir vessels for mechanical seals shall be sized such that make-up time intervals shall be a minimum of 250 hours of operation.

机械密封的密封液盒的大小应能保证至少250小时运行的补充时间间隔？

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The structure vibration of make-up pump has influence on the flow smoothness of fluid. The spectral analysis of random vibration for a Japanese make-up pump model KM-30 has been carried out.

补液泵的结构振动会影响补液的平滑性，本文对一台日本KM—30型补液泵进行了结构的随机振动谱分析。

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