taper key way milling cutter是什么意思

用法例句

The article introduces the structure feature and working principle of a new type Reduction Sleeves with 7:24 taper and indicates its use value and application prospect.

介绍一种新型7:24锥柄用过渡套的结构特点和工作原理,并提出了其使用价值和应用前景。