溢流阀，减压阀，以保证系统的稳定压力。
B. overfall valve, reductor valve for ensuring stable system pressure.
溢流阀、减压阀和顺序阀在许多方面很相似，容易混淆。
There are many similarities among the overflow valve, the decompression valve and the order valve, so they are easily confused.
针对目前采用比例溢流阀和伺服阀加载存在的不足，提出在钢坯修磨机上采用比例三通减压阀加载。
Aiming at the disadvantages of present loading system applying proportional relief valve or servo valve, loading system with 3-way proportional pressure reducing valve is proposed.
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