【机械工程】旋转的滑阀齿轮【机械工程；照明；加热；武器；】旋转滑阀齿轮

rotary slide-valve vibrator

rotary-drilling machine with gearing for mining

rotary

rotary-drilling machine mining, quarrying

speed gearing rotary-drilling machine with speed gearing for mining

rotary gyroscope for indicating the vertical

adjusting, holding rotary gyroscope

rotary machine