bottom knife coater

例句：

1. 1. The bottom knife coater is used to coat the bottom of the cutting tools with a protective layer.
   底部刀具涂层机用于给切割工具的底部涂上一层保护层。
2. 2. During the manufacturing process, the bottom knife coater is responsible for ensuring that the cutting toolsare properly coated.
   在制造过程中，底部刀具涂层机负责确保切割工具得到适当的涂层。
3. 3. The bottom knife coater is an essential tool in the production line, as it helps to improve the quality and durability of the cutting tools.
   底部刀具涂层机是生产线中不可或缺的工具，它有助于提高切割工具的质量与耐用性。