notch(ing) curve

• 阶梯形曲线

英英释义

名词 notch:

1. a V-shaped indentation

2. the location in a range of mountains of a geological formation that is lower than the surrounding peaks

3. a V-shaped or U-shaped indentation carved or scratched into a surface

4. a small cut

动词 notch:

1. cut or make a notch into

2. notch a surface to record something