Then from the expression of gas well deliverability in pseudo-steady state flow, there can have the expression of gas PI with and without high speed non-Darcy percolation.
同时还对拟稳定流动气井产能公式进行推导，推导出考虑高速非达西渗流、不考虑高速非达西渗流的采气指数的表达式。
In order to keep the pressure of the gas import as a fixed value, the design used a PI-conditioning.
为了保持原烟气入口压力为定值，本设计采用PI调节。
The values, of oxygen content in the flue gas measured by a ZrO2 sensor are sent out as electric signals by a transmitter, They are converted into pressure signals via PI regulator.
由氧化锆探头测出烟道气中的氧含量，经氧量变送器输出电信号，用调节器进行PI运算，再转换成压力信号。
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