... mitral valve prolapse syndrome 二尖瓣脱垂综合征 metered valve 量阀 pet valve 小型旋塞(阀); 试验阀 ...
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升降式止回阀使用一个可承受弹簧载荷的轻量阀瓣，阀瓣的升程不高。
Lift check valve with a spring load can withstand light valve flap, flap valve lift is not high.
试验结果表明：浮阀筛孔复合塔板操作弹性小、气液处理量小；
The results show that valve-sieve compound trays have smaller turndown ratio and smaller capacity.
进入蒸发器的制冷剂由一个阀或量孔控制。
The entrance of refrigerant into the evaporator is controlled by a valve or an orifice.
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