排气流量 meaning in English

exhaust gas flow
extraction flow

Measurement of intake air or exhaust gas flow of diesel engines
柴油机进排气流量的测量
The only method to get nox mass flow rate is to know nox concentration in the exhaust and the exhaust mass flow rate . this paper discusses the computational method to get exhaust mass flow rate by carbon / oxygen balance method . besides the traditional computational method , this paper also demonstrates the possibility of applying bp neural network to predict no , emissions from marine diesel engines
由于大功率船用柴油机本身所固有的体积大、排气流量大以及测量困难等特点，使得排气中no _ x的质量流量不能直接测量，而只能通过测量no _ x的体积浓度并确定排气质量流量或体积流量，才能推算出排气中no _ x的质量流量。