液压自动 meaning in Chinese

hydromatic

Development and application of hydraulic automatic air door
液压自动风门的研制与应用
Hydraulic automatic control system
全液压自动换档系统
Popularization and use of hydraulic auto - tauten devices in belt conveyor type yzl
100型皮带机液压自动张紧装置的推广应用
Roll - and - shear random cutting run - out frame hydraulic pressure drops in automatic way
落料系统：液压自动落料随机配两个料架， 3m一个