barrel throttle
... 筒形铰刀 shell reamer 筒形节流阀 barrel throttle 筒形锯 crown saw; {设计} hole saw ...
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旋转筒形节流阀 [机] rotary barrel throttle
筒形可调节流阀主要用于节流压井管汇，控制井内流体套压用。
Tube of shape Can transfer throttle chief be used for Choke and Kill Maniflod , Control oil gas wellhead In fluid pressure use.
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按功能可分为针形可调节流阀、筒形可调节流阀。
Points function can divide into a needle shape can transfer throttle, Tube of shape can transfer throttle.
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