One end of the cable is permanently connected to the enclosed mercury switch and the entire assembly is encapsulated to form a completely watertight and impact resistant unit.
电缆的一端永久性连接在封闭的水银开关内，这个完整的密封总装形成完全不透水、抗撞击装置。
2
This enclosed space is glass-floored AD is suspended over further public facilities, which include more shops, the hotel lobby, a multi-purpose assembly hall, a conference centre and restaurant.