1. 锯齿状的：serpent-type 蛇型的 | serrated 锯齿状的 | serrated pliers 锯齿钳

2. 齿边：series 系列,(一)组(币). | serrated 齿边. | set 套.

3. 细齿的：serratebuttstrap 锯齿形对接衬板 | serrated 细齿的 | serratednut 细齿螺母

4. 齿形：光滑的 smooth | 齿形 serrated | 算术平均粗糙高度 arithmetical average roughness height (AARH)

1. (刀、刀片等)呈锯齿状的,呈蛇尖状的
    A serrated object such as a knife or blade has a row of V-shaped points along the edge.

    e.g. Bread knives should have a serrated edge.
           面包刀的刀刃应该有波浪齿。

1. notched like a saw with teeth pointing toward the apex

    Synonym: serratesaw-toothedtoothednotched