selective switchgear

例句：

1. 1.The selective switchgear is designed to improve the efficiency of the system.
   选择性开关设备旨在提高系统的效率。
2. 2. The new selective switchgear has been developed to meet the needs of modern power systems.
   新型选择性开关设备已开发以满足现代电力系统的需求。
3. 3.The selective switchgear was installed in the new power station to ensure safe and reliable operation.
   选择性开关设备在新的发电厂安装以确保安全和可靠的运行。