relaysetn.继电器组(继电器装置)
relayvt.转播;转达;中继;接力;接替n.继电器;接力赛;替班
relay aircraft中继转信飞机
relay distance中继距离
relay topology接力式结构
relay runction继电器功能
relay feedback继电反馈
relay act trip继电器操作跳闸
relay circuity继电器电路学
relay assembly继电器组合
relay receiver转播用接收机,接力接收机
relay networks中继网络