名词气孔，河中不冰冻部分

1. 气孔：气暖装置 air heating installation | 气孔 air hole | 气笛 air horn

2. 通气孔：air hole 气孔 | air hole 通气孔 | air horn 气笛

3. 通风孔：air hoist 气葫芦 | air hole 通风孔 | air hose 风管

4. 透气孔：177. after peak bulkhead 尾尖舱壁 | 178. air hole 透气孔 | 179. aircraft carrier 航空母舰

noun

1. a hole that allows the passage of air

2. a local region of low pressure or descending air that causes a plane to lose height suddenly

    Synonym: air pocketpocket