ballast bed finisher

例句：

1. 1. The engineer is responsible for designing and manufacturing the ballast bed finisher.
   这位工程师负责设计和制造球型变压器的填充物。
2. 2. The company specializes in producing high-quality ballast bed finishers for various electrical equipment.
   该公司专门生产各种电气设备的高质量球型变压器填充物。
3. 3. The new technology allows for more precise control of the ballast bed finisher, resulting in betterperformance.
   新技术使得对球型变压器填充物的精确控制成为可能，从而获得更好的性能表现。