The most recognizable is the gear train made from eight gears.

最显眼的是由八个轮组成的轮动系统。

Fully contained within either two or all four wheels, they deliver torque (a twisting force) directly to each wheel, avoiding the energy losses associated with the gears and transmission links used by centrally mounted motors.

完全内置于两个或全部四个车轮，它们将扭矩（一种扭转力）直接递到每个车轮，避央安装电机所使用的轮和动链带来的能量损耗。

Most of the gears in the gear train are composed of compound gears, each of which has two different gears, one on top of the other.

轮动系统的大多数轮是由复合轮组成的，每个复合轮包含两个不同的轮，一个叠在另一个上面。

The oomph produced by the engine must then be passed through clutches, gears, and driveshafts to make the wheels turn, and then exhaust systems have to deal with the waste.

发动机产生的动力必须通过离合器、轮和动轴才能使车轮转动, 然后排气系统必须处理废物。

For example, in a single afternoon you can learn about gear trains, then dive into oscillations and classical mechanics, followed by chemistry and understanding how batteries store energy.

例如， 在一个下午， 你可以学习轮动系统，然后深入解振荡和经典力学，接着学习化学并解电池是如何储存能量的。

Now that we've covered the gear train, Let's dive into the quartz crystal oscillator and see what makes this clock nearly identical to the digital clock in your computer.

现在我们已经讲过轮动系统，让我们来看看石英晶体振荡器， 看看是什么让它几乎与你电脑里的数字钟一样。

At the beginning of the gear train, a driver gear is rotated by an electromagnet, which provides the force to rotate the clock hands.

在轮动系统的开始部分，一个驱动轮由电磁铁旋转，从而提供转动时钟指针的动力。