ring valve meaning in English

环形阀
环状阀

Abstract : take cylindrical compression string which has been applied extensively in the piston compressor with the concentric ring valve for example , the mathematics model of optimum design for the air valve string has been set and the optimum value of single & multiobjective has been evaluated by the way of monotonic analysis
文摘:以活塞式压缩机环状阀中使用最为广泛的圆柱形压缩弹簧为例，建立了气阀弹簧优化设计的数学模型，并用单调分析法进行了单目标和多目标的优化求解