主要的差别是，相比于太阳，阿连德陨石缺失了大部分的挥发性元素，例如氢、碳、氧、氮和稀有气体。
The major difference is that Allende is depleted in the most volatile elements, like hydrogen, carbon, oxygen, nitrogen, and the noble gases, relative to the Sun.
六种稀有气体在元素周期表的最右侧。
The six noble gases are found in the far right column of the periodic table.
这是稀有气体的离子半径。
命名：稀有气体，惰性气体。
氦是最轻的稀有气体。
氖是空气中的稀有气体，只占空气体积的千分之几。
Neon, a rare gas in the air, takes only fractional percentage point of the volume.
产品：剧毒气体，高纯度气体，稀有气体和自燃气体。
Products: Highly Toxic Gases, High-Purity Gases, Rare Gases and Pyrophoric Gases.
在为人所知的所有稀有气体化合物中，稀有气体原子具有净正电荷。
In all of the known chemical compounds of the noble gases, the noble-gas atom has a net positive charge.
地球不同圈层的稀有气体同位素具有不同的特征同位素比值。
Rare gases in different spheres of the earth have different characteristic isotopic ratios.
从上世纪中叶以来，物理学家对稀有气体晶体进行了大量研究。
Since the middle of last century, physicists have all along conducted studies on the rare gas crystals.
计算结果表明该重叠积分可以用来表示稀有气体原子间的排斥势。
Their results show that interatomic repulsive of the rare gas can be expressed by the overlap integrals.
较重的稀有气体具有较低的电离势，这也可以解释它们的化学性质。
The low ionization potentials of the heavier gases also account for their chemistry.
在稀有气体一阶电离势的基础上，科塞尔注意到：氙最可能形成氟化物和氧化物。
On the basis of the first ionization potentials of the gases, Kossel noted that xenon was most likely to have the capability of forming fluorides and oxides.
稀有气体的一阶电离势提供了一个评价的标准，能衡量外层电子被有效核电荷束缚的强度。
The first ionization potentials of the noble gases provide a measure of how firmly the outer electrons are held by the effective nuclear charge.
根据碳同位素组成和稀有气体同位素组成分析，认为研究区不存在纯的幔源气。
As the gases from different origins were interacted and mixed for along time, their composition, isotope constitution were complicated.
在烃类天然气中，由于稀有气体的含量很微，所以其同位素组成的检测相对较困难。
The measurement of the noble gas isotopes in hydrocarbon natural gases is relatively difficult because their content is very low.
第二部分是对稀有气体晶体的体弹性常数和孤立单一密排面的弹性常数进行了计算。
The second part mainly has carried on the computation of the body elastic constants and the isolated single closed-packed plane of the rare-gas crystal.
鉴于我国大多数合成氨厂弛放气中稀有气体未能得到综合利用，造成资源浪费的现状。
At present the rare gases in the vented gas of the most ammonia plants are not properly utilized in China.
地幔流体中稀有气体同位素组成与其所处的大地构造背景和深部地幔岩浆活动性质有关。
Noble gas isotopic compositions in mantle fluids are associated with their tectonic settings and magmation in deep mantle.
因为带正电的稀有气体中心具有高的电负性，所以，该中心的任何配体必须自身具有电负性。
Because of the high electronegativity of the positively charged noble-gas centers, any ligands for those centers must themselves be electronegative.
那么，你认为稀有气体的电子亲和能，应该是一个高的正值，一个低的正值，还是一个负值？
So do you think noble gases would have a high positive electron affinity, a low positive, or negative electron affinity?
软X线稀有气体电离室作为软X线波段绝对探测器，是通过测量光电离子流得出光谱辐射强度。
The technique of soft X-ray ion chamber includes the measurement of the ion current as a function of rare gas pressure in the ion chamber.
本文介绍了一台以热压胶合双层平板电容器泵浦的对称结构快放电稀有气体卤化物准分子激光器。
A fast discharge rare gas halide excimer laser with symmetric geometry pumped by glued and hot pressed capacitor is introduced.
氩还在照明工业得到了广泛应用，填充灯泡，以及同其它稀有气体一起用于获得特殊的颜色效果。
Argon is also widely used in the lighting industry for filling bulbs and in combination with other rare gases for special color effects.
使用稀有气体，如氮气和氩气，以防止高温造成氧化。使用惰性气体代替氧气对高温室进行增压。
Inert atmosphere ovens use noble gases, such as nitrogen and argon, to prevent oxidation caused by high temperatures.
原子序数18，原子量39。948，是一种稀有气体。1894年由英国化学家瑞利和拉姆赛发现。
Atomic number 18, atomic weight 39. 948, is a rare gas. 1894 by the British chemist Rayleigh and Ramsay found.
还兼营液氧、液氮、液氩、乙炔气、二氧化碳、氢气、丙烷气、氟里昂、液氨及其他高纯和稀有气体。
It also supplies liquid oxygen, liquid nitrogen, acetylene, carbon dioxide, hydrogen, propane, freon, liquid ammonia, and rare element gas.
还兼营液氧、液氮、液氩、乙炔气、二氧化碳、氢气、丙烷气、氟里昂、液氨及其他高纯和稀有气体。
It also supplies liquid oxygen, liquid nitrogen, acetylene, carbon dioxide, hydrogen, propane, freon, liquid ammonia, and rare element gas.
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