direct heating surface

例句：

1. 1. The new heating system uses a direct heating surface to provide heat for the building.
   新的供暖系统使用直接加热表面为建筑物提供热量。
2. 2. The engineer designed the direct heating surface to efficiently distribute heat throughout the room.
   工程师设计了直接加热表面，以有效地在整个房间内分配热量。
3. 3. The direct heating surface is made of high-quality materials that can withstand extreme temperatures.
   直接加热表面由高质量的材料制成，能够承受极端温度。