在对蒸汽主管的132只疏水阀所做的检验表明，42%的疏水阀已实效。
In 132 head of steam trap testing done shows that 42% of the traps have been effective.
在供热系统中的蒸汽主管线和小型加热设备是最理想的疏水阀之一。
It is one of the most ideal traps in boiler system steam tracing and midget heating system.
疏水阀的运用面广量大，当然不行疏忽，各级主管长官都无须高低注重。
The use of a wide range of large trap, of course, not negligence, are not required at all levels of the Officer in Charge level of attention.
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