液(ye)(ye)(ye)(ye)壓(ya)傳(chuan)動(dong)(dong)(dong)是以液(ye)(ye)(ye)(ye)體(ti)為(wei)工作介質，利用液(ye)(ye)(ye)(ye)體(ti)的(de)壓(ya)力(li)能來實現(xian)運動(dong)(dong)(dong)和力(li)的(de)一種(zhong)傳(chuan)動(dong)(dong)(dong)方式。一般而言，能夠實現(xian)某種(zhong)特定(ding)(ding)功能的(de)液(ye)(ye)(ye)(ye)壓(ya)元(yuan)(yuan)(yuan)件(jian)的(de)組(zu)合，稱為(wei)液(ye)(ye)(ye)(ye)壓(ya)回(hui)路，而若干特定(ding)(ding)的(de)基(ji)本功能回(hui)路連接或復合而成的(de)總體(ti)則稱為(wei)直流液(ye)(ye)(ye)(ye)壓(ya)動(dong)(dong)(dong)力(li)單(dan)元(yuan)(yuan)(yuan)。直流液(ye)(ye)(ye)(ye)壓(ya)動(dong)(dong)(dong)力(li)單(dan)元(yuan)(yuan)(yuan)通(tong)常都是由液(ye)(ye)(ye)(ye)壓(ya)元(yuan)(yuan)(yuan)件(jian)（動(dong)(dong)(dong)力(li)元(yuan)(yuan)(yuan)件(jian)、執行元(yuan)(yuan)(yuan)件(jian)、控制元(yuan)(yuan)(yuan)件(jian)、輔助(zhu)元(yuan)(yuan)(yuan)件(jian)）和工作介質兩大部分組(zu)成。

直流(liu)液壓動力單元型號規格：