two-stage valve

基本解释

Two-stage pressure relief valve with provision for remote control.
带远程控制装置的两阶段减压阀。
Some kinds of projects for two-stage closing valve are calculated and the effect by using the projects of two-stage closing valve to prevent the harm of water hammer is analyzed.
进行了快、慢两阶段关闭蝶阀的最优关阀方案的计算分析，讨论了两阶段关阀调节的水锤防护特性；
By adopting a 2D pneumatic digital servo valve composed of servo spiral mechanism, conventional two-stage pneumatic servo valve structure is simplified while its performance is greatly enhanced.
利用一种伺服螺旋机构构成的二级气动数字伺服阀（简称“2D气动数字阀”），简化了传统二级气动伺服阀的结构而性能却有较大提高。