The role of the move is to prevent the cold air into the building of the elevator shaft.
此举的作用也是阻止冷空气进入大厦的电梯井道。
Daily maintenance for Air-conditioner, Generator, Heater, Fire facility, Elevator and so on.
空调、发电机、热水器、消防设施、电梯的日常维护保养。
Daily maintenance for Air-conditioner, Generator, Heater, Fire facility, Elevator and so on.
空调、发电机、热水器、消防设施、电梯的日常维护保养。
应用推荐