roller hearth furnace

例句：

1. 1. The roller hearth furnace is an essential tool for baking bread.
   滚筒炉是烘焙面包时必不可少的工具。
2. 2. The rolling hearth is a traditional Chinese cooking method that involves rolling dough into balls.
   滚心是一种传统的中国烹饪方法，它涉及将面团滚成球状。
3. 3. In the old days, people used to use the roller hearth furnace to bake their own bread.
   在旧时代，人们常常使用滚筒炉来自己烤面包。