four pipe system 四管式系统
zone four-pipe system 局部四管系统
four-pipe water system 四管制水系统
four-pipe system 四管制
four water pipe system 四水管系统
Thick wall pipes are the core component of so called "four pipe" system for thermal power. It is important to apply circumferential guided wave technique to nondestructive testing of thick wall pipes.
厚壁管道是火电机组四大管道系统的核心部件，将超声导波技术应用于厚壁管道的无损检测显得十分重要。
Describes the features and equipment of the air conditioning system, focusing on the lithium bromide units and operating mode of four-pipe water system, and summarizes the existing problems.
对武汉中石油大厦空调系统特点、设备配置等方面进行了介绍，主要对溴化锂机组及四管制系统的运行模式等进行了探讨，同时对存在的问题进行了总结。
The skirt building adopts all - air system, the guest rooms adopt fan - coil unit plus fresh air system, and the water system is four - pipe type.
裙房采用全空气系统，客房采用风机盘管新风系统，空调水系统采用四管制。
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