排汽缸，后汽缸，排风罩
1. 局部排风罩：exhaust fan room排风机室 | exhaust hood局部排风罩 | exhaust inlet吸风口
2. 排气罩：exhaust gases 排出气体 | exhaust hood 排气罩 | exhaust steam 排出蒸汽
3. 排风罩：exhaust grille 排气格栅 | exhaust hood 排风罩 | exhaust opening 排气口
4. 排风罩/柜：层流净化罩/柜 Laminar flow hood | 排风罩/柜 Exhaust hood | 粗粉碎机 Rough pulverizer
noun
1. metal covering leading to a vent that exhausts smoke or fumes
Synonym: hood