特形喷管
The wellhead throttle valve is made up of nozzle, plunger-shaped spool, throttle value, valve body and valve rod, etc.
该井口节流阀由喷嘴、柱塞形阀芯、节流轴、阀体、阀杆等组成。
On the influence of the box-shaped internal structure on the nozzle flow in water curtain system
箱式水幕系统中箱体内部结构对喷嘴出流的影响
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