分佈在條狀物體上的齒輪。其結構上與小齒輪嚙合，將轉動轉變為移動。

齒條可以被看為分度圓半徑無限大的圓柱齒輪。因此經常被用在工具機和自動作業系統。斜齒條是指齒線傾斜的齒條。

Gear Row/Rack

Rack and Pinion Gears are distributed on a linear object. Structurally, they engage with a small pinion gear to convert rotational motion into linear movement.

A rack can be viewed as a cylindrical gear with an infinitely large pitch circle radius. Therefore, it is frequently used in machine tools and automatic systems. A helical rack refers to a rack with angled teeth.