奥里诺科重油油藏
Orinoco heavy oil reservoir
动臂油缸油管组
boom cylinder lines group
动臂油缸油路压力
boom cylinder circuit pressure
飞机燃油油量测量
fuel quantity gaging on aircraft
平地铲油缸油密性试验
levelling blade cylinder leakage test
平衡重油缸附件
counterweight cylinder fitting
平衡重油缸轴承
counterweight cylinder bearing