Company engineers were due to begin pressure tests on the new cap late Tuesday, gradually closing its valves to shut down the flow of oil.
工程师们将于周二晚开始对这种新型防漏罩进行压力测试,并逐渐关闭其阀门以终止漏油。
2
The SPRD is used on zone systems when the automatic closingof various zone dampers can create an excessive increase in air pressure and velocity throughout the duct system.
SPRD旁通阀是当各种区域风门自动关闭时用在区域系统中,可以在管道系统中增加空气压力盒速度。
3
Sheldon: or if the first door closing creates a change of air pressure that acts upon the second door.