蓄能器液压管
accumulator hydraulic line
液压压下控制系统
hydraulic screwdown control system
液压压下系统
hydraulic screw down system
Hydraulic screw-down system
hydraulic capsule control system
hydraulic AGC
hydraulic loading system
hydraulic gauge control system
液压压下油缸
hydraulic screwdown cylinder
液压压下自动辊缝控制
hydraulic automatic gauge control
最大的向下液压压力
full hydraulic down pressure
管下扩眼偏心钻头
eccentric underreaming bit