3C(持续的、合作的、全面的)交通规划程序
3C transportation planning process
全面通风
overall ventilation
the comprehensive ventilation
Ventilation in the whole workplace
全面通风方程
general ventilation equation
新鲜空气的通风控制
fresh air ventilation control
干井通风排气道
drywell ventilation exhaust duct
供排气通风
supply and exhaust ventilation
排气通风
exhaust ventilation
Exhausting and ventilating
排气通风系统
exhaust system ventilation
off-gas vent system