您搜索了: helium (英语 - 简体中文)

helium
氦

helium-3
氦—三

helium flash
氦闪

helium, compressed
压缩氦

kk (he) = 0.9 (helium)
kk (he) = 0.9 (氦)

(q) helium gas detectors;
(q) 氦气探测器；

this is a high-altitude helium balloon.
这是高海拔氦气气球。

the helium atoms had to be very far apart.
氦原子之间必须要有很远的一段距离

and that's why helium's called helium.
这就是为什么氦元素叫做氦元素。

and now simple atoms appear of hydrogen and helium.
现在普通原子 氢，氦出现了。

it's that shape because the helium has to expand.
它呈这个形状是由于氦气的膨胀。

we need helium, and the helium is what we really need to go deep.
我们需要氦气，它是我们深潜时所真正需要的

the first one was that when helium atoms touch each other, they repel.
第一条是 当两个氦原子相碰时 它们会相斥

(a) a new helium bottle to repressurize the liquid hydrogen tank;
(a) 给液氢箱再增压的一个新氨气瓶；

and unfortunately, the helium atoms in liquid helium are right on top of each other.
可惜在液体氦里的氦原子 根本就都叠在一起

the universe was about 75 percent hydrogen, 25 percent helium. it still is today.
宇宙由75%的氢和 25%的氦形成，直到今天仍是这样

all other neon lamps use mercury with noble gases including krypton, argon, and helium.
所有其他颜色的霓虹灯都使用汞，另加氪、氩、氦等惰性气体。

feynman decided, as a sort of amateur helium physicist, that he would try to figure it out.
作为一个“业余”氦物理学家 费曼决定给它一试

after about a few minutes, there was hydrogen and helium in the universe. that's all.
大概几分钟以后 氢和氦出现在宇宙中。就是这样

the implication of that is that the wave function has to go to zero, it has to vanish when the helium atoms touch each other.
这也就意味着波函数会归零 只要氦原子互相碰撞 波函数必须归零