driving-wheel

n wheel that communicates power to other parts of a machine, or to which power is applied 驱动轮; 主动轮.

drip, drip-dry, dripping, dripping-pan, drive, drive at, drive away at, drive home, drive out, drive up, drive-in, drivel, driven, driver, driver's license (US), driving licence, driving school, driving-belt, driving-licence, driving-test, drizzle, drizzly, drogue, drogue-parachute, droll, drollery, dromedary, drone, drool, droop, droopy, drop, drop by, drop by/in, drop off, drop on, drop out, drop over, drop to one's knees, drop-goal,