This gas-operated valve should be kept in a well-ventilated dry room, with both ends of the ventilation channels closed. The gas-run valve should be either completely closed or open.
气动球阀应存放在干燥通风的室内，通径两端应封闭，气动阀应处于全开或全关的位置。
2
Rinehart said remotely operated underwater vehicles monitoring the sea floor around the well have so far revealed no evidence of oil or natural gas leaks.
瑞恩哈特说，经由遥控在油井周围观测海底的水下载具到目前为止还没有显示石油或天然气泄露的迹象。
3
By using graphite as electrode, the laser can be operated up to 50hz without gas flowing.