continuous roller-hearth furnace

例句：

1. 1. This continuous roller-hearth furnace is used for melting metals.
   这种连续式辊筒炉用于熔化金属。
2. 2. The continuous roller-hearth furnace is an essential tool in the manufacturing process.
   连续式辊筒炉是生产过程中不可或缺的工具。
3. 3. The continuous roller-hearth furnace has a high efficiency and low energy consumption.
   连续式辊筒炉具有高效率和低能耗的特点。