Thermal mass flow sensor has unique constant temperature principium as mathematical model for measuring medium mass flow without compensation of temperature and pressure.
采用独特的恒温原理建立数学模型，测量出介质的质量流量，无须温度和压力补偿。
In steady flow mass flux is constant.
在稳定流动中，质量通量是恒定不变的。
In steady flow, mass flux is constant.
在稳定流动中，质量通量是恒定不变的。
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