零(相)序继电器 zero phase sequence relay: 零相序继电器; 零序继电器zero-phase-sequence relay: 零序继电器relay sequence: 继电器序列; 切换顺序sequence relay: 动作次序继电器; 顺序动作继电器; 顺序继电器zero sequence: 零序部分下载手机词典可随时随地查词查翻译