气体-气体热交换顺
gas-to-gas heat exchanger
气体体积分数
Gas volume fraction
gas-liquid volume fraction
气体体积含量
volume concentration of gas phase
气体体积色谱
gas volumeteric chromatography
奥氏体气体氮碳共渗
gas nitrocarburizing at austenite condition
半导体气体传感器
Semiconductor air sensor
semiconductor gas sensor
semiconducting gas sensors