计算机网络中的数据总是通过介质传送，所以数据常常出现被截取、中断、篡改、伪造等安全性问题。
Data in computer networks was transmitted by media, so data always arise question of cut out, interrupt, modify and gorge.
在电源供应中断时，也可以通过手动来操作阀门启闭，从而紧急控制了介质的流向，也避免了事故的发生。
When power is cut off , it also can be operated by manual to control the flow of media an avoid accidents .
双塔设计能够同时进行压缩空气烘干和去湿介质再生，而不中断压缩空气的流动。
The twin-tower design allows simultaneous compressed air drying and desiccant media regeneration for uninterrupted compressed air flow.
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