There are various methods to solve the pump operation point.

水泵工况点求解的方法有多种。

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Timer control pump operation time, less expensive and easy to operate.

定时器控制泵的运转时间，较便宜且操作简单。

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Vortexing Can cause unstable pump operation, vibration, pulsation and severe mechanical damage.

涡流可能会导致泵运行不稳定、振动、跳动和严重的机械破坏。

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One theory is that it was part of a pump and dump stock operation.

FORBES: The Great Google Takeover Fake Press Release

An operation to pump water out of flooded properties in an East Yorkshire village is continuing.

BBC: Flooded street at Burton Fleming

Smit, which in charge of salvaging Prestige before it sank, said the operation - to pump the oil back to the surface - would cost nearly 50m euros and take several months to complete.

BBC: French sub to try patching Prestige