control knob

• 控制旋钮,调整旋钮

control knob的用法和样例：

例句

1. There is no cold air coming out from the air conditioner and the control knob does not work.
   空调器不吹冷气，控制旋钮坏了。
2. The monochrome screen is easy to read, and the clickable thumbwheel control permits scrolling through programming and feature menus readily enough.
   单色萤幕十分易读，按键式的拇指控制旋钮，能够方便地浏览节目与功能选单。