fan draught cooler 冷风机

fan-draught cooler 风扇冷却器

forced draught air cooler 强制通风空气冷却器

natural draught air cooler 自然通风空气冷却器

forced-draught air cooler 强制通风冷却器

air cooler forced draught 空气冷却器

cooler with natural draught detail 自然通风冷却器

induced draught water cooler 吸风水冷却器

forced draught rotary cooler 鼓风环式冷却机