knurled
adj. 有凸边的；有节的
例句
The crested top was milled and knurled like the knob on a safe.
冠毛茸茸的顶部早已磨平，酷似保险箱的隆起球形旋钮。
Heavy duty adjusting screw. Adjusting screw is both slotted and knurled.
重型调节螺丝。调节螺丝既有槽也有花纹边。
The strong knurled collar receives the installation force and resists torque.
坚固的花齿铆接后能够承受巨大的扭力。
