This can realize the automatic change to switch over instrument amount.
这样可以实现仪器量程的自动切换。
Each gas manifold shall be constructed to provide semi-automatic switch over from in-use cylinders to online backup cylinders.
使用的气瓶和备用气瓶之间有一个半自动调节阀来控制。
Each gas manifold shall be constructed to provide semi-automatic switch over from in-use cylinders to online backup cylinders.
使用的气瓶和备用气瓶之间有一个半自动调节阀来控制。
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