水性封墙底漆 Water-based close wall primer
水溶性封片剂 Clear-Mount ; Clear-M
高级水性封闭底漆 High-grade water-soluble close primer
防水密封接头挠性管 PROOF PACKING GLAND ; FLEXIBLE CONDUIT WITH WATER-PROOF PACKING GLAND
封端型水性聚氨酯 waterborne blocked polyurethane
水中阀体密封性试验 Water Valve Tightness Test
水密封性 Watertightness
水不密封性 LLW
水泥封隔性能 cement packing property
目的研究胸腔闭式引流一次性水封瓶更换时间与胸腔感染是否相关，以确定更换一次性水封瓶的时间。
Objective To investigate the relation between the replacing time of water-sealed bottle and the thoracic cavity infections, and determine the optional time for replacement.
针对磷酸生产用水的特殊性，总结了大装置磷酸生产用水封闭循环使用存在的问题，并因地制宜地找到了解决此问题的方法。
This paper summarize the existing problems in the cycle use of process water for phosphoric acid production, and also some measures to solve were put forward.
目的探讨胸腔感染与一次性水封瓶更换时间长短的临床意义。
Objective To investigate the clinical significance between thoracic infections and the replacing time of one-off water seal bottle.
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