碳素压球机液压保护装置是由液压泵将高压油打入液压缸，使活塞产生轴向位移。
Carbon pressure ball machine device is a hydraulic pump hydraulic protection will be high pressure oil into the hydraulic cylinder, driving the piston produce axial displacement.
滑块采用液压过载保护装置，进口泵阀控制；
The slide adopts hydraulic overload protecting device, which controlled imported pump valve;
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