serration是什么意思

实用例句

1. The points for attention in designing the serration axle are pointed out.

指出了渐开线螺旋花键轴几何尺寸设计时应注意的问题.来自互联网

2. Cut the edge of the card by pinking shears to make serration or wave patterns.

再使用造形剪刀将卡片的边缘剪成锯齿或波浪状,以增加美感.来自互联网