并保证泵在工作时，不超过其允许汽蚀余量。4、吸入和排出管路应该有支架。

And ensure the pump at work, no more than the allowed NPSH. 4, suction and discharge line should be a support.

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并保证泵在工作时，不超过其允许汽蚀余量。4、吸入和排出管路应该有支架。

And ensure the pump at work, no more than the allowed NPSH. 4, suction and discharge line should be a support.

youdao