D.C.two-wire insulated system

例句：

1. 1.The new building has a D.C. two-wire insulated system installed to ensure energy efficiency.
   这座新建筑安装了双层绝缘系统，以确保能源效率。
2. 2. The D.C.two-wire insulated system is designed to prevent electrical short circuits.
   双层绝缘系统设计用来防止电气短路。
3. 3. The D.C.two-wire insulated system is widely used in modern buildings due to its high energy efficiency.
   由于其高能源效率，双层绝缘系统在现代建筑中被广泛使用。