A tube is placed inside the body to collect urine, so the patient does not have to get out of bed.
VOA: special.2010.04.21
Let's look at the energetics of one of those electrons crashing into a hydrogen atom inside the gas tube.
我们一起来考察一下,其中的一个电子的能量,在阴极射线管中,撞击到氢原子上。
And what is inside the gas discharge tube is gas at low pressure.
气体放电管里,有处于低压下的气体。
One can imagine that when they're inside this tube here, they're still really outside the body.
你可以想到当食物在肠管的时候,实际上还是处在体外的
Let's take a look inside that tube. Let me redraw it.
我们来看看管子的内部,再重新画张图。
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