工艺由一组配有充氧装置的处理构筑物组成，其间设有连通管道及控制闸阀，能组成多种污水处理系统。
Reciprocal Sewage Treatment Process is consisted of a group of units with aeration devices and interconnected by communicating pipes and control valves.
偏心金属硬密封球阀已在一些新装置建设和老装置改造中取代了一部分闸阀而得到应用。
Now gate valves have been replaced by eccentric metal hard seal ball valves in the construction of some new unit and old unit revamping.
研制的简易酸化井口装置由保护法兰、过渡短节、卡箍、闸阀、三通和抗振压力表等组成。
The simple well head assembly newly developed is comprised of protection flange, pup joint, clip, gate valve, tee joint and anti-vibration pressure meter.
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