n.下向通风(向下气流；倒灌风)
Make sure the downdraught cooler be in normal situation during the whole experimental process. 另外要防止皮肤的灼伤。
The stack ventilation strategy was evolved by the introduction of passive downdraught cooling. 引进了被动式向下通风供冷技术后，竖向风道通风技术得到了发展。
However, as the plane approached the intense rain area, winds abruptly backed to northerlies coupled with a rapid increase in downdraught to over 30 knots. 但是当航机接近大雨区时，风向突然转为北风，并出现急剧加速的下沉气流，时速超过 30海里。
Passive and Hybrid Downdraught Cooling, which rely on natural cooling processes based on water evaporation and solar power, are now technically viable in many parts of the world. 依靠水蒸发和太阳能的被动及混合倒风制冷技术目前在世界上大部分地方得到了广泛应用。
The resulting building is believed to be the first large-scale application of the passive downdraught cooling technique;construction began in late 2003. 该建筑于2003年后期开始施工，相信它将成为第一座大规模应用被动式向下通风供冷技术的建筑物。
