以前的观测只追踪了氦原子。
Previous observations had traced only incoming helium atoms.
那么氦原子核的电荷量是多少呢？
粒子获得两个电子之后就变成了氦原子。
Upon gaining two electrons the alpha particle becomes a helium atom.
一个氦原子的重量不到四个原始氢原子。
A helium atom weighs less than the four original hydrogen atoms.
研究设计了一种亚稳态氦原子束源系统。
A system of metastable helium atom beam source has been developed.
机器为铜线圈充电，形成一个弱磁场，使得氦原子旋转。
The machine's electrified copper coils generate a weak magnetic field, causing the helium atoms to rotate.
如果氦原子失去了一个电子，我们得到了什么？
一种放射性的金属元素在用氦原子轰击时发现。
A radioactive transuranic metallic element discovered by bombarding with helium atoms.
如果氦原子失去了一个电子，我们得到了什么？ ？
氦原子双激发态是理解原子中电子关联的典型基本态。
Helium doubly excited states is the prototype systeam for the study of electron correlation.
最后利用原子的能级，讨论了氦原子电离能最大的原因。
认为氦原子具有三个以上的自由度，将会导致错误的论断。
To assign more than three degrees of freedom to a helium atom would lead to incorrect predictions.
ADC值的增加提示氦原子在测定过程中扩散到了更远的距离。
An increased ADC value indicates that the helium atoms were able to travel farther during the measurement time.
提出了一个新的处理强光中基态氦原子阈上电离谱的解析模型。
A new analytical model for the ATI spectra of ground state He-atom in strong laser fields is proposed in this paper.
氦- 3弥散磁共振成像通过检测氦原子移动的距离测定肺脏损伤。
Helium-3 diffusion MRI identifies this damage by measuring the increased distance the helium atoms move.
这是一个关于氦原子电子云的物理图像，是我和几个同学一起做的。
This is one of the electronic cloud of helium atoms of the physical images, and several classmates do.
由这个模型算得的基态氦原子阈上电离谱同最近的实验结果作了比较。
It is found that the calculated ATI spectra by the model fits the recent experimental spectra very well.
与其他恒星一样，太阳也是一个巨大的“气球”——大部分主要为氢原子和氦原子。
Like other stars, the sun is a big ball of gases — mostly hydrogen and helium atoms.
所以我们来对屏蔽举两个例子，如果我们在讨论氦，举例来说一个氦原子核或者氦原子。
So let's take two cases of shielding if we're talking about, for example, the helium, a helium nucleus or a helium atom.
计算了在最弱受约束电子势模型理论下使用双广义拉盖尔多项式的氦原子基态能量。
We calculated the he atom ground-state energy using a double generalized Laguerre polynomial in the weakest bound electron potential model (WBEPM) theory.
结果表明，等离子体的产生是由于电子束对氦原子的碰撞电离及其雪崩效应引起的。
The generation mechanism of the plasma and its effects on the output microwave are analyzed.
背心能够探测到氦原子方向和位置，然后把数据传给计算机，再转化成一副气流流经肺部的图像。
The vest detects the orientation and position of the helium atoms and sends the data to a computer, which turns it into an image of airflow through the lung.
由于质子与中子的质量大约相等(并且电子几乎没有质量)，氦原子的质量大约应是氢原子质量的四倍。
Because protons and neutrons have roughly the same mass (and electrons have almost no mass), the helium atom should have about four times the mass of the hydrogen atom.
正如在太阳上所进行的反应一样，第二阶段连锁反应将氢原子聚合成较重的氦原子并在这一过程中释放出巨大的能量。
Just as in the sun, the chain reaction in the second stage fuses the hydrogen atoms into heavier helium atoms and releases vast amounts of energy in the process.
在这种原本只能发生在恒星内部的极端条件下，氢原子将发生聚变反应而生成氦原子，同时释放出大量能量。
Under such extreme conditions, which are found only in the core of stars, the hydrogen atoms will fuse, producing helium and vast amounts of energy.
这些粒子主要是质子、电子和氦原子核，并且当他们与地球高层大气中的原子核碰撞，就能产生次级粒子簇射。
The particles are generally protons , electrons and helium nuclei and when they collide with nuclei in the Earth's upper atmosphere they can produce shower s of daughter particles.
这些粒子主要是质子、电子和氦原子核，并且当他们与地球高层大气中的原子核碰撞，就能产生次级粒子簇射。
The particles are generally protons, electrons and helium nuclei and when they collide with nuclei in the Earth's upper atmosphere they can produce showers of daughter particles.
福斯勒指出氢原子数量比氦原子或氧原子数量要多得多，但是它质量很小，很容易被太阳风吹散，从而不能被稳定地观测到。
Hydrogen atoms are more abundant than either helium or oxygen but their low mass means they are easily swept aside by the high-speed solar wind and can’t readily be detected.
福斯勒指出氢原子数量比氦原子或氧原子数量要多得多，但是它质量很小，很容易被太阳风吹散，从而不能被稳定地观测到。
Hydrogen atoms are more abundant than either helium or oxygen but their low mass means they are easily swept aside by the high-speed solar wind and can’t readily be detected.
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