rim of gear

例句：

1. 1.The car's engine is a complex machine with many moving parts, including the rim of gear.
   汽车发动机是一个复杂的机器，有许多移动部件，包括齿轮的轮缘。
2. 2. The engineer carefully examined the rim of gear to ensure it was functioning correctly.
   工程师仔细检查了齿轮的轮缘，以确保它正常工作。
3. 3.During the assembly process, the rim of gear must be aligned precisely to prevent damage.
   在装配过程中，齿轮的轮缘必须精确对齐，以防止损坏。