双向阀门 bi-directional valve
鱼尾形双向阀 fishtail twin
双向阀安装 two-way valve mount
双座、单双向阀 twin-seat oneseatuni-directional andoneseatbi-directional valve
双座、双向阀 twin-seat both seatsbidirectional valve
双座双向阀门 twin-seat, both seats bi-directional, valve
双单向节流阀 Double throttle check valve ; Valve ; Doublethrottlecheckvalve
双向延迟阀 delay valve two-way
双向止流阀 double branch stop valve
同心双向阀结构克服了传统的单向阀并联结构两阀间易连通的缺点。
The construction of concentric bi-directional valve overcomes the disadvantage of easy to connect between two parallel check valves.
积极的机械推力驱动阀塞进入阀体阀座馁，确保紧密双向管路密封。
Positive mechanical thrust drives plug into body seats to ensure tight bi-directional line seal.
介绍最近研制的一台双向进气带第二小孔阀型二级脉管制冷机实验情况。
In this paper an experimental investigation on a recently developed two stage double inlet pulse tube refrigerator with a minor orifice is introduced.
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