可变宽度铺路机样板延伸油缸
vip screed extension cylinder
发动机机油油路简图
engine oil flow schematic
发动机润滑油路油压低
low engine oil pressure circuit
模锻锤油路油流量
impactor circuit oil flow
润滑油油路量孔
lubrication passage orifice
制动器冷却油油路
brake cooling oil circuit
奥里诺科重油油藏
Orinoco heavy oil reservoir