底部特配有托盘保护玻璃真空气室，防止其磨损。
The tray at the bottom of the manifold can prevent glass chamber fraying.
假如空气通过裂痕进入灭弧室，真空断路器就失灵。
Vacuum breakers fail supposing that leaks permit air to enter the interrupting chamber.
医护室设置了便携式心肺复苏机、急救箱、躯干和肢体的真空气囊和急救药品等。
The medical treatment room provides portable cardiopulmonary resuscitator first-aid kit vacuum air bag for trunk and limb and first-aid medicines.
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