液(ye)(ye)壓(ya)(ya)(ya)傳動(dong)(dong)是(shi)以液(ye)(ye)體為工作(zuo)介質(zhi)，利用液(ye)(ye)體的壓(ya)(ya)(ya)力(li)能(neng)(neng)來實現運動(dong)(dong)和(he)力(li)的一(yi)種傳動(dong)(dong)方式。一(yi)般而(er)言(yan)，能(neng)(neng)夠實現某種特定功能(neng)(neng)的液(ye)(ye)壓(ya)(ya)(ya)元(yuan)(yuan)(yuan)件(jian)(jian)的組合，稱為液(ye)(ye)壓(ya)(ya)(ya)回路，而(er)若干特定的基本功能(neng)(neng)回路連接或復合而(er)成的總體則稱為直(zhi)(zhi)流(liu)液(ye)(ye)壓(ya)(ya)(ya)動(dong)(dong)力(li)單元(yuan)(yuan)(yuan)。直(zhi)(zhi)流(liu)液(ye)(ye)壓(ya)(ya)(ya)動(dong)(dong)力(li)單元(yuan)(yuan)(yuan)通常都是(shi)由液(ye)(ye)壓(ya)(ya)(ya)元(yuan)(yuan)(yuan)件(jian)(jian)（動(dong)(dong)力(li)元(yuan)(yuan)(yuan)件(jian)(jian)、執行元(yuan)(yuan)(yuan)件(jian)(jian)、控制元(yuan)(yuan)(yuan)件(jian)(jian)、輔助元(yuan)(yuan)(yuan)件(jian)(jian)）和(he)工作(zuo)介質(zhi)兩大部分組成。

直流(liu)液壓動力單元型號規(gui)格：