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wall ventilator
mech. 壁装式通风机
nautic., tech. 舱室壁通风筒; 流吸式排风帽
tech. 墙上通风孔; 墙上通风机; 穿墙式通风机; 壁上通风器
wall ventilator: 2 phrases in 2 subjects
Nautical1
Technology1