... orifice gauge 孔板测流规 orifice measuring device 孔口测流设备 orifice meter 孔板流量计 ...
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orifice measuring device
孔板测量装置
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The differential pressure fluctuation has a quite great influence upon the measure precision in measuring natural gas flow rate with the measuring device by use of standard orifice plate.
在采用标准孔板节流装置测量天然气流量时，盖压波动对测量精度影响甚大。
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