relay pad继电器垫圈relayvt.转播；转达；中继；接力；接替n.继电器；接力赛；替班relay system interlocking继电联锁relay computer protection微机保护relay transmission system中继传输系统relay-station satellite卫星转播站relay armature hesitation衔铁瞬时延迟relay-contactor control接触器控制relay just-release value继电器始可释放值relay operated accumulator继电累加器relay controlling register继电器控制寄存器relay type echo suppressor继电器式回声抑制器