By adopting some technology of advanced detection, adding temporary invert, sleeve valve pipe and lock foot bolts, the construction of the tunnel is completed safely and successfully.
Staff has recommended the temporary closure of the pool on the water users valve so when the next meter reading pay attention to pooled water situation.
工作人员已建议用户暂时关闭水池上水管阀门，等下期抄表时，留意公摊水量情况。
3
The hydraulic valve auxiliary control unit (12) keeps the exhaust valve (5) in a temporary opening position.