It is proved that in electron circular accelerator, the longitudinal distribution of particles in electron bunch can be approximately expressed as hollow distribution.

在电子环型加速器中可以证明，电子束团中粒子沿纵向的分布律可近似地表示成为空心分布。

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So on your computer's hard drive are again, a whole bunch of tiny magnetic particles aligned this way or this way.

因此，你的电脑硬盘是完全是，有一簇按照这种方式排列的磁性粒子。

youdao

So on your computer's hard drive are again, a whole bunch of tiny magnetic particles aligned this way or this way.

因此，你的电脑硬盘是完全是，有一簇按照这种方式排列的磁性粒子。

youdao