attent-unattent switch

• 自动转换开关

attent-unattent switch的用法和样例：

例句

1. An automatic transfer switch monitors the condition of the sources and connects the load to the alternate source if the preferred source fails.
   自动转换开关能够进行监控，如果首选电源供应失败，就自动把负载连接到备用电源。