该疏水阀的结构比较简单，主要由浮球和自动排空装置组成。
This steam trap has a simple structure, mainly consisting of float balls and automatic emptying devices.
其优点是排空容积小、抽真空快、装置简单轻便、重量轻、体积小。
It has such advantages as small empty volume, high vacuumizing speed, simple and convenient structure, etc.
先排空塑料袋，再用橡皮压挤球或者其它泵类装置将样品充入袋内。
The bag is purged and filled with samples using a rubber squeeze bulb or other pumping devices.
应用膜分离技术，回收聚丙烯装置排空不凝气中的丙烯，回收率在85%以上。
Propylene recovery at a rate above 85% from the non-condensable gas released from polypropylene plant was carried out with membrane separation technique.
应用膜分离技术，回收聚丙烯装置排空不凝气中的丙烯，回收率在85%以上。
Propylene recovery at a rate above 85% from the non-condensable gas released from polypropylene plant was carried out with membrane separation technique.
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