semi-muffle type furnace

例句：

1. 1.The semi-muffle type furnace is ideal for heating small rooms.
   这种半封闭炉非常适合加热小房间。
2. 2. The engineer used the semi-muffle type furnace to heat the building.
   工程师使用这种半封闭炉来加热建筑物。
3. 3. The semi-muffle type furnace was designed to reduce noise pollution.
   这种半封闭炉被设计成减少噪音污染。