这么大的原子核不可能是稳定的,但在足够长的时间内,在真空附近组装一个原子核以观察真空的衰变是可能的。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
它们都是真空的。
相对论电子所产生的光线将进入完全真空的光学谐振器当中。
Relativistic electrons produce light that goes to the optical resonator with absolute vacuum inside.
So, indeed, we are talking about a lot of void and a tiny little bit of extremely dense being.
事实上,更多的是许多真空,只有极小部分的高密度的物质。
This is titanium sponge that comes out of the bottom of this reactor, and it subsequently re-melted in a vacuum arc furnace.
海绵状的钛,从反应器的底部出来,随后在真空炉中重新熔炼。
And so an experiment said the gas didn't increase its temperature when it expanded the vacuum.
这个实验告诉你,气体在向真空膨胀的过程,中温度没有升高。
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