No satellite dish is on the roof, no air-conditioning units are evident.
建筑屋顶上没有装卫星天线接收器，也不见空调箱。
The total heat exchanger is a new type of energy saving equipment for air-conditioning units.
本文介绍新型空调节能设备——全热交换器的结构、工作原理、热效率及其应用。
SHERRY: I understand we will need seven air conditioning units on the two floors.
雪莉：我了解我们需要七部空调机在两个楼面。
SHERRY: I understand we will need seven air conditioning units on the two floors.
雪莉：我了解我们需要七部空调机在两个楼面。
应用推荐