Variable Speed: New variable speed pumps offer a noticeable improvement over accumulator tank systems.

可变速的水泵：新的可变速的泵在压力鼓系统上面也有改进。

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Using high speed pumps to replace gear pumps for ammonia recycling, satisfactory results were achieved.

氨液循环泵由齿轮泵改为高速泵，效果较好。

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Proposes methods such as by-pass with chiller, multi-grade pumps and variable speed pumps to optimize series ice storage systems.

对于串联系统，则提出采用制冷机旁通、多级泵和变频泵的方法使系统配置更加合理。

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The subsea power grid encompass pumps and compressors and large variable speed drives to transport the oil and gas from the wellhead to a processing facility.

FORBES: World's First Subsea Smart Grid Changes Offshore Oil and Gas Game

He also wants to speed up sales of home appliances that use efficient heat pumps--made, of course, by domestic manufacturers.

FORBES: Magazine Article