【机械工程；照明，加热，武器，爆破】变速齿轮，变向齿轮

speed-changing cylindrical gearing planetary gearing

belt speed-changing gearing with cone pulleys

speed-changing bevel gearing planetary gearing

belt speed-changing gearing

speed-changing gear boxes

speed-changing gearing

speed-changing arrangement

speed-changing gearing engaging stepped pulleys for V-belts, belts, ropes