If any of return sludge pumps is in off mode, it will be regarded as standby unit. If fault is found on duty pump, the standby pump will be automatically change over.

没有启动的污泥回流泵作为备用泵，如主泵发生故障，备用泵自动切入。

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It is ideal for high or low level alarm and pump control duty in Marine tanks in the most arduous and demanding of environments.

此开关是海运过程中多数危险环境中，低高级报警和泵控制功能理想的选择。

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This implies a pump head-flow characteristic that falls continuously from shut valve to duty point by at least 10%.

这意味着，一个水泵头流量特性属于不断从关闭阀门到责任点，由至少10 %。

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When it came to the competitiveness of the oil market, she added the Office of Fair Trading was undertaking a review of pump prices in Scotland but a cut in duty this August seemed out of the question.

BBC: Campaign for lower fuel prices moves up a gear

There were pump and spritz sprays on the tables in the poodle grooming area, but none of the heavy-duty aerosol hairspray cans that are a no-no.

WSJ: Primping pooches: Do's and don'ts at Westminster