快通快断 qmqb quick make quick break: 快通快断quick make-and-break switch: 快速开关quick-make-and-break type: 快速通断型quick make and break type switch: 高速断续开关quick break: 快断路; 快速断裂; 快速断路器速断高速断路器; 速断快速断路器下载手机词典可随时随地查词查翻译