废气再循环

exhaust

exhaust gas【环境】;off-gas【环境】[专业]炼油时产生的\ntail gas【油气】;vent gas【环境】

quick exhaust valve【油气】;rapid escape valve【动力】

exhaust manifold, silencing apparatus (silencer)

排气机\ndischarge velocity【机】;exhaust velocity【流】 机

underwater exhaust ship (vessel)

combustion engine with pump for exhaust gas (waste gas)

recycling of exhaust gases