Any device that combines incoming message into a single message (concentration) or extracts individual messages from the data sent in a singletransmission sequence (deconcentration).
Besides existing the singletransmission questions, two grades of reducer have other problems, such as dimension coordinate, transmission radio distribute, power flow direction and balancing.
双级减速器除了存在单级的传动问题以外，还有外形尺寸协调、传动比分配、功率流分流及机构平衡等问题。
3
Although fault component current phase selector has excellent performance for singletransmission lines, it may select unwanted phase for cross-country faults in double-circuit lines on a same tower.