drum worm wheel

例句：

1. 1. The engineer designed a drum-shaped worm wheel to improve the efficiency of the machinery.
   工程师设计了一个鼓形蠕虫轮，以提高机械的效率。
2. 2.The new design uses a drum-shaped worm wheel to reduce noise and vibration.
   新设计使用鼓形蠕虫轮来减少噪音和振动。
3. 3. The drum-shaped worm wheel is crucial for the smooth operation of the machine.
   鼓形蠕虫轮对于机器的平稳运行至关重要。