水力闸 meaning in English

water brake

Now we need the hydraulic brake actuator , which has both the booster section and master cylinder section , this feature enables the booster section to be powered by an existing mineral base hydraulic oil circuit while using the mineral base hydraulic oil or the brake fluid
现在我们需要水力闸作动器,有助推器部分和主要圆筒部分,这个特点使助推器部分由一条现有的矿物基本的水力油电路供给动力当使用矿物基本的水力油或制动液。