1.Dr Vetrovec intends to perform his version of the trick at atmospheric pressure, and using permanent magnets.

维特威克博士想要在气压力下使用永磁体来实现他的这种把戏。

2.On the other hand, permanent magnets are always on.

另一方面，永磁体始终处于开启状态。机翻

3.This makes electromagnets quite different from permanent magnets.

这使得电磁体与永磁体有很。机翻

4.This is different from a permanent magnet because permanent magnets don't need this wire.

这与永磁体，因为永磁体需要这种电线。机翻

5.So let's take a look at that and compare permanent magnets to electromagnets.

让我们看一下并将永磁体与电磁体进行比较。机翻

6.Permanent magnets also have fixed poles.

永磁体也有固定磁极。机翻

7.Permanent magnets have a fixed strength, but we just talked about how we can change the strength of electromagnets, so electromagnets have adjustable strength.

永磁体的强度是固定的，但是我们刚才讲了如何改变电磁铁的强度，所以电磁铁的强度是调的。机翻

8.Permanent magnets do not need a power source, but this means that we can also turn electromagnets on and off, which is pretty cool when you think about it.

永磁体需要电源，但这意味着我们也以打开和关闭电磁体，想想看，这真是太酷了。机翻

9.Every second the electromagnet switches directions, thus causing the magnet inside the driver gear to rotate 180 degrees in order to align its  permanent magnet with the fields produced by the electromagnet.

电磁铁每一秒都会切换方向，从而导致驱动齿轮内的磁铁旋转 180 度， 以使其永磁体与电磁铁产生的磁场对齐。机翻

10.The pump is a brushless DC motor constructed from a PCB, a control chip and a stator on the dry side, a barrier in the middle, and then the permanent magnet rotor and impeller on the liquid side.

该泵是一个无刷直流电机，由干侧的PCB、控制芯片和定子，中间的屏障， 以及液侧的永磁转子和叶轮构成。机翻