two-stage valve

基本解释

Two-stage pressure relief valve with provision for remote control.
帶遠程控制裝置的兩堦段減壓閥。
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.
進行了快、慢兩堦段關閉蝶閥的最優關閥方案的計算分析，討論了兩堦段關閥調節的水鎚防護特性；
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.
利用一種伺服螺鏇機搆搆成的二級氣動數字伺服閥（簡稱“2D氣動數字閥”），簡化了傳統二級氣動伺服閥的結搆而性能卻有較大提高。