high-grade insulating materials

例句：

1. 1. These high-grade insulating materials are used to make electrical equipment.
   这些高级绝缘材料用于制造电气设备。
2. 2. The new building uses high-grade insulating materials to reduce energy consumption.
   这座新建筑使用了高级绝缘材料来减少能源消耗。
3. 3. The insulation materials are designed to provide a safe and reliable barrier between the wires.
   绝缘材料被设计为在电线之间提供安全和可靠的屏障。