磁铁

The traditional stability diagram for lattice design described in the space of the gradients of a focusing and a defocusing magnet is extended to study more complicated cases, in which the basic cell included in the super-periodic structure has more than two gradients as variables.

将环形加速器磁聚焦结构设计中，传统的聚焦和散焦磁铁强度空间中的稳定图方法，应用到更复杂的含有两个以上磁场梯度变量的超周期结构中，从而更深入地理解结构共振的形成机制和隐含的物理意义。

Step 1: Now we're going to show you how to make your magnets levitate.

步骤一：现在，我们要来示范如何制作悬浮的磁铁。

In today's experiment you will harness the power of magnetic repulsion to make a magnet levitate.

今天的实验中，你将利用磁性拒斥的作用来制作一个飘浮磁铁。

In this way, shaking hands round to make the magnet spins, as a result of a change in magnetic line of force, resulting in the coil wire on the current generated.

这样，摇动手轮使磁铁旋转时，由于磁力线发生了变化，结果在线圈导线中就产生了电流。

Long time ago, ancient Greeks and Chinese found a kind of naturally magnetized stone; they called this kind of stone the lodestone and that kind of stone was the ancestor of magnets.

很久以前，古希腊人和中国人发现自然界中有种天然磁化的石头，他们称其为"吸铁石"，这就是磁铁的鼻祖。

This is why aircraft carriers are called "bomb mag***s".

这就是航母被称为"炸弹磁铁"的原因。

This is why aircraft carriersare called "Bomb Mag***s".

这就是航母被称为"炸弹磁铁"的原因。

This is why aircraft carriersare called "Bomb Mag nets".

这就是航母被称为"炸弹磁铁"的原因。

Do you know how a magnet works?

你知道一块磁铁是如何工作的吗？

It has to do with you being a magnet

就好像你是一个磁铁

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。