miter joint with spline

例句：

1. 1. The carpenter used a miter joint to attach the wooden planks together.
   木匠使用一个带花键的接头将木板连接在一起。
2. 2. The engineer designed a spline that could be easily adjusted for different sizes of holes.
   工程师设计了一个花键，可以轻松调整以适应不同大小的孔洞。
3. 3. The machine tool used a splice to connect two pieces of metal together.
   这台机器工具使用了花接来连接两块金属。