文档介绍：先导式减压阀的设计新
目录
摘要.............................................................................................................................................. 2
Abstract ............................................................................................................................................. 3
第一章引言................................................................................................................................... 3
第二章.............................................................................................................................................. 4
..................................................................................................................... 5
.................................................................................................. 5
、液压技术的发展......................................................................................... 5
阀......................................................................................................................... 6
、先导式定值减压阀....................................................................................... 7
...................................................................................................... 9
.................................................................................................... 11
第三章..................................................................................................................................... 12
........................................................................................... 12
........................................................................................ 12
............................................................................................ 12
...................................................................................