片语
ventilation storage installation通风贮藏设施
ventilation and air-conditioning installation通风
ventilation E installation通风设备
ventilating device[机] 通风设备
Ventilation duct installation contractors通风管道设备承包商
ventilator通风设备;换气扇;【医】呼吸机
crank case ventilation installation曲轴箱透气装置
Generator ventilation system installation发电机组排风系统安装
large-sized ventilation installation大型通风机装置
ventilation fan通风设备