1. Below it there is a cogwheel, a symbol of the working class. 稻穗下方是一个齿轮，象征着工人阶级。
2. a cogwheel on the locomotive engages cogs on a center rail to provide traction. 火车头上有一个钝齿轮，使 嵌齿 接合铁轨中心来牵引火车。
3. We use belt or cogwheel to regulate speed for the main shaft , ball lead screw and stepping motor for operating plat form . 主轴采用皮带或齿轮变速，工作台采用滚珠丝杆，步进电机；
英英解释
n.
1. a toothed wheel that engages another toothed mechanism in order to change the speed or direction of
