将系统中的水排出，直到锅炉压力读数降为零。

Draw off system water until boiler pressure reads zero.

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Remon公司依靠一种传送能量的超声波制造芯片，使其传回压力读数。

Remon relies on a form of ultrasound that transmits energy to power the chip and prompt it to send back its pressure readings.

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如果泄漏不超过25%，所有的量表压力读数都应该是相等的。

All gauge pressure indications should be equal, with no more than 25% leakage.

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