Both methods demonstrate some delay lag occurring in pump valve movement.

这两类方法得到的结果均说明泵阀运动存在滞后现象。

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The modified formula represents much more accurately the actual working condition of the pump valve.

修正后的公式可以比较准确地反映泵阀的实际工作情况。

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Based on the analysis on all kinds of load while the pump valve is working, we establish the corresponding mechanical model.

对泵阀工作时的各种载荷进行了分析，建立了相应的力学模型。

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The center is part of a broader effort unfolding across the Great Lakes region to regain lost prosperity by developing a "blue economy" a network of industries that develop products and services related to water, from pump and valve manufacturers to resorts offering vacations along redeveloped lakeshores.

WSJ: Great Lakes region pins economic hopes on water

Tyco (NYSE:TYC) spun off its ADT Corp. (NYSE: ADT) alarm security business as a separate public company on October 2 after selling its pipe and valve business earlier this year to pump maker Pentair.

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The valve that failed last Saturday was in a pump house, Cunha explained, so the seven-year risk analysis is still good.

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