circulation supply pipe
... circulation sedimentation tank 循环沉淀槽 circulation supply pipe 循环给水管 circulation test 循环试验 ...
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给水管道内的空气及其它不凝性气体会引起很多问题，如噪音、腐蚀、循环迟滞，甚至造成设备的暂时中断。
Air and other non-condensable gas inside the water pipe will cause a lot of problems, such as noise, corrosion, hysteresis loop, and even cause a temporary interruption of the device.
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