pressure difference test meter
pressure difference test meter
压差测试仪
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Differential pressure gauges is used to test the pressure difference between two points, it is a mechanical pressure gauge that can directly indicate the pressure difference on the instrument meter.
差压表是用来检测两个检测点的压力差值，直接在仪表表盘上指示出差压值的机械式压力表。
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