本文系根据日本空气压工业会系统委员会的文章编译而成。原文刊登在日本杂志《油压化设计》1973№5和1975№9上。对原文中某些复杂回路,编译者加了动作过程说明并作了删改。文中管路图形符号已按我国GB786—××液压及气动图形符号标准(报审稿)修改过,图中个别谬误也作了更正。因篇幅较长,分两期刊载。 This article is based on the Japanese Air Press Industry Committee system compiled from the article. Original published in the Japanese magazine “hydraulic design” 1973 № 5 and 1975 № 9 on. Some of the original complex circuit, the compiler added a description of the action process and made a censor. Text pipeline symbols in accordance with our GB786- × hydraulic and pneumatic graphical symbol standard (reported review) over, the figure of individual errors have also been corrected. Due to longer length, published in two phases.