semi-continuous furnace

例句：

1. 1.The semi-continuous furnace is used for melting metals.
   半连续式炉子用于熔化金属。
2. 2. The engineer designed the semi-continuous furnace to meet the production needs.
   工程师设计了半连续式炉子以满足生产需求。
3. 3.The semi-continuous furnace has a higher efficiency than traditional furnaces.
   半连续式炉子的能效比传统炉子更高。