left-and-right-hand end mills

例句：

1. 1. Themachine has a left and right hand end mill for cutting wood.
   这台机器有一个左右手端铣刀用于切割木材。
2. 2.The tool is made of high carbon steel, which makes it durable and suitable for left and right hand end mills.
   这种工具由高碳钢制成，使其耐用且适用于左右手端铣刀。
3. 3.In the workshop, there are many left and right hand end mills for different types of workpieces.
   在车间里，有许多不同类型的工件适用的左右手端铣刀。