gear with curved teeth

• 弧齿轮

gear with curved teeth的用法和样例：

例句

1. This factory makes high speed gear shapers.
   这个工厂制造高速齿轮造形机。
2. The driven gear fits its driving gear like a glove.
   这个从动齿轮与它的主动轮啮合得非常好。