Electromotor ventilation section shape is similar to the I beam and H beam.
电机通风用异形钢材是一种机械零件，其断面形状类似工字钢和H型钢。
This section at 6 meters below the surface houses the ventilation equipment for the cooling of the transmitters.
地下6米处的这个区域，容纳了信号传送器通风冷却设备。
The cross section of the house stimulates natural ventilation, avoiding the use of air conditioning during summer.
房子的横截面促进自然通风，可以在夏季不使用空调。
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