Gas pipelines have a single role of booster pumps and pump dual role.

气体管道增压泵有单作用泵和双作用泵。

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It can be used alone, can also be used as booster pumps, diffusion pumps, molecular pumps pump before use.

它可以单独使用，也可作为增压泵、扩散泵、分子泵的前级泵使用。

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The company mainly produces magnetic pump, metering pumps, diaphragm pumps, booster pumps and other products.

公司主要生产磁力泵、计量泵、隔膜泵、增压泵等系列产品。

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Mirra deep cleans any type of in-ground pool surface and water without using the pool's filtration system, hoses or booster pumps, which results in energy cost savings from running these pool systems less frequently.

ENGADGET: iRobot flaunts the Mirra 530 pool cleaning robot, sends the Looj 330 abroad