I pneumatic leak test at a pressure of not less than 6 bar after assembly of all tankvalves and fittings.
气阀及配件装配后不少于6巴压力的气压测漏报告。
2
One of these valves - which maintain tank pressure during liftoff - broke during the last shuttle launch in November.
其中一个用于在发射时保持燃料箱压力的阀门，在11月的发射前破裂。
3
The containment spray system consists of two pumps, spray ring headers, a spray additive tank, a number of motor operated isolation valves and all necessary piping, instruments etc.