可变宽度铺路机样板延伸油缸
vip screed extension cylinder
样板延长液压油缸
screed extension hydraulic cylinder
铲斗垂直刀刃板样板
bucket router plate template
模板油缸位置
moldboard cylinder location
动臂油缸油管组
boom cylinder lines group
动臂油缸油路压力
boom cylinder circuit pressure
平地铲油缸油密性试验
levelling blade cylinder leakage test