它们配备有安全减压阀和破裂盘，以保护钢瓶，防止过多的压力积累。
They come equipped with safety relief valves and rupture disks to protect the cylinders from excessive pressure build-up.
目的：探讨青光眼减压阀引流术治疗新生血管性青光眼的有效性和安全性。
AIM: To evaluate the safety and effectiveness of Ahmed glaucoma valve device in the treatment of neovascular glaucoma.
手轮、手柄和扳手传动以及安全阀、减压阀、疏水阀省略本代号。
The engineer opened the safety valve to allow the steam to escape and so reduce the pressure.
手轮、手柄和扳手传动以及安全阀、减压阀、疏水阀省略本代号。
The engineer opened the safety valve to allow the steam to escape and so reduce the pressure.
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