Mechanic seals are widely used in fluid machines for their rotary shafts.

机械密封是流体机械旋转轴密封的主要类型，使用量大面广。

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The analogical law of fluid machines and principle of electronics are applied to explain the principle of frequency conversion.

应用流体机械相似定律及电工学原理，阐明变频调速原理。

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First this paper research on using variable speed fluid couplings in speed regulation control system of dual pumps or fans machines running in parallel mode.

本文首先对调速型液力偶合器应用于泵或风机双机并联运行的调速控制系统进行研究。

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But perhaps you need more exposure to slag, sewage pumps, adhesion promoters, viscous fluid dosing machines and state-of-the-art grease cartridges.

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Every improvement is likely to make interaction with machines more fluid and even emotional.

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