So they convert mechanical energy of rotation to magnetic energy, 1 which is not part of 801 so I will not go into how they do that.
它们将旋转的机械能，转化成磁能，这不是801的部分1，所以我不会讲怎么做。
2
And a group of them have now taken a step towards developing such a piece of kit-a magnetic memory with no moving mechanical parts.
如今已有一批工程师们开始着手研发这样的一款设备—没有机械运动部件的磁性存储器。
3
This is part of 802, and I'm sure all of you are looking forward to 802, and that's when you will see how you can convert mechanical energy into magnetic energy.