over and-under relay 过和低继电器
under-voltage relay 欠压继电器 ; 低电压继电器 ; 欠电压继电器 ; 低压继电器
under-current relay 低电流继电器 ; 欠流继电器
under voltage relay 低电压电驿 ; 低电压保护 ; 欠电压继电器 ; 低电压继电器
DC under voltage relay 直流低压继电器
under frequency relay 低频率继电器
under-power relay 欠功率继电器
Under-load relay 负载不足继电器
Under-impedance relay 低阻抗继电器
The charger shall give an alarm signal upon failure initiated by either an under-voltage relay or a zero charging current relay.
充电器应发出警报信号后没有任何一方发起一个欠压继电器或零充电电流继电器。
Based on the concepts of broadcast channel and multiple access channel, a novel half-duplex relay strategy was proposed, and optimal resource allocation under this strategy was investigated.
基于广播信道及多址接入信道的概念，提出了一种新的半双工中继协议，并对该协议下的资源分配问题进行了研究。
A new random access protocol assisted by fixed relay stations under the transparent mode in multi-hop relay networks over the time division multiple access was presented.
提出时分多址方式下由固定中继节点支持的透明模式下的随机接入协议，通过中继节点与用户间的合作重传来解决多个用户同时接入发生碰撞的问题。
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