传动装置的作用是传送动力和改变旋转方向。
Gears serve to transfer power and change the direction of rotation.
一种可改变旋转方向的门把手组件，包含有把手、罩盖、弹簧和卡圈；
The utility model relates to a door-handle component capable of changing rotation directions, comprising a handle, a cover cap, a spring, and a clamping ring.
一种能使刷头随转轴一起转动，并且还可以改变旋转方向的双向旋转式电动牙刷。
The utility model relates to a two-way rotary electric toothbrush. The brush head of the utility model can rotate with a rotating shaft and the rotating direction can be changed.
齿轮成对运转，无滑动地传递并改变旋转运动和转矩，一个齿轮的齿与配对齿轮的齿啮合。
Gears operate in pairs, the teeth of one engaging the teeth of a second, to transmit and modify rotary motion and torque.
齿轮的另一个作用是改变旋转方向。例如，汽车的差速器必须将动力转90度传递给车轮。
Another thing gears do is adjust the direction of rotation. For instance, the differential of car has to turn power 90 degrees to apply it to the wheels.
结果表明：采用旋转气流及用改变旋流强度的方法来调节低压油烧嘴的火焰长度是切实可行的。
It has shown that adopting revolving air flow and adjusting the flame length by changing the strength of revolving for low pressure oil burners is feasible.
结果表明：采用旋转气流及用改变旋流强度的方法来调节低压油烧嘴的火焰长度是切实可行的。
It has shown that adopting revolving air flow and adjusting the flame length by changing the strength of revolving for low pressure oil burners is feasible.
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