However, over time, Xiake Zhang found the fourth floor of a firevalve has no water.
然而经过一段时间后，夏科长发现四楼的一个消防阀门还没有水。
2
The paper discusses some common problems in the engineering design of the classification of air-conditioner system and smoke ventilation system as well as the set up of the firevalve.
本文对暖通设计中通风空调及排烟系统的划分、防火阀的设置等工程设计中常见的问题进行了探讨。
3
Toyota famously resumed production within five days after a fire destroyed a brake valve supplier in 1997.