Abstract : a new sequencing valve o f with structure of open in usual and compound has been introduced with principl es , characteristics and application in control circuit of increasing speed cylind ers of hydraulic press 文摘:介绍了一种新型顺序阀? ?常开式和复合式顺序阀的结构、原理、特点及其在液压机增速缸增速控制回路中的应用。