先导阀供油孔  pilot valve supply port

先导油供油管路  pilot oil supply line

先导油供油通道  pilot oil supply passage

先导供油  pilot supply oil

先导供油管路  pilot supply line

先导油孔  pilot oil port; pilot oil hole

回程先导油  return pilot oil

离合器先导油  clutch pilot oil

前先导油管口  front pilot line port

输入的先导油  incoming pilot oil

伺服机构先导油流  servo pilot oil flow

推进先导油路  propel pilot oil line

先导导管  pilot guide

先导孔  pilot port; pilot hole; pilot bore; pilot

先导孔偏差  pilot bore runout

先导孔压力  pilot port pressure

先导油  pilot oil

先导油安全阀  pilot oil relief valve

先导油泵  pilot oil pump