气体-气体热交换顺
gas-to-gas heat exchanger
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
工作气体气压和充气配比
pressure and proportion of gas mixture
脉冲MIG气体保护焊
pulsed MIG gas shielded welding
脉冲气体氮碳共渗
pulse gas nitrocarburizing
脉冲气体放电
pulsed gas discharge tube