在强制热风和冷风系统中，通风管道将热空气的冷空气输送到家里不同的地方。
In forced-air heating and cooling systems, ducts carry hot or cold air to different parts of home.
头盔装具上的鳍状物附属物为强制通风片，能够向拆弹专家的面部输送新鲜空气以便排除汗水。
The fin-like appendage on the helmet houses a forced ventilation fan, which blows fresh air over the technician's face to relieve perspiration.
尽管缺乏特殊表皮的强制通风设备，运行的花费还是很低的。
Despite lack of forced ventilation of special envelope seals the running costs are very low.
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