direct firing evaporator

例句：

1. 1. The direct-fired evaporator is an essential tool for drying and sterilizing medical equipment.
   直接点火蒸发器是干燥和灭菌医疗设备的必备工具。
2. 2.The new model of the direct-fired evaporator has been introduced to improve efficiency and reduce energy consumption.
   新型直接点火蒸发器已推出，旨在提高效率并减少能源消耗。
3. 3.In the manufacturing process, the direct-fired evaporator plays a crucial role in removing impurities from the raw materials.
   在生产过程中，直接点火蒸发器在去除原材料中的杂质方面起着至关重要的作用。