oil pressure relief valve
油压卸压阀
油压泄压阀
油压泄放阀
油压安全阀
机油减压器
Pneumatic proportional pressure relief valve
pressure protection valve
pressure relief valve
减压阀
泄压阀
压力释放阀
卸压阀
减压安全阀
压力排放阀
安全阀
释压瓣
释压阀
油层压力
proportion pressure relief valve
hydraulic model for pressure relief test
pressure relief test of monitors
120 Type Brake Control Valve Test Rack
2D digital relief valve
accumulator relief valve
计算机辅助设计
CAD（计算机辅助设计）
蓄能器安全阀
actual steering relief valve setting
adjustable relief valve
air reservoir relief valve