upper drum assembly

例句：

1. 1. The upper drumassembly is responsible for the sound production ofthe instrument.
   上鼓组件负责乐器的声音产生。
2. 2.The upper drum assembly needs to be adjustedregularly to ensure optimal performance.
   上鼓组件需要定期调整以确保最佳性能。
3. 3. The upper drumassembly is made up of various parts thatwork together to produce the desired sound.
   上鼓组件由各种部件组成，它们共同工作以产生所需的声音。