The electron gun can achieve energy scan of electron beam.

电子枪可以实现电子束能量扫描。

youdao

And now we repeat the experiment, only this time we come with an electron beam.

现在来重复一下实验，仅在这次我们得到了电子束。

youdao

And now we repeat the experiment, only this time we come with an electron beam.

现在来重复一下实验，仅在这次我们得到了电子束。

youdao