relayvt.转播;转达;中继;接力;接替n.继电器;接力赛;替班
relay servo继电器式伺服机构
relay timer继电计时器
relay group继电崎
relay cover继电器罩
relay input[计] 继电器输入
relay valve中继阀,继动阀,减压阀
relay house继电器室
relay shelf继电器架
relay board继电器盘
relay array继电器阵列