Uranium is a chemical element.
铀是一种化学元素。
镭是一种化学元素。
镭和铀是放射性元素。
Zinc is a chemical element which is very important to our health.
锌是一种对人体健康很有益处的元素。
Lead is a chemical element that can be used in building construction.
铅是一种化学物质，可以作为建材使用。
For the first time ever, scientists have been able to create a chemical element that can fight caner cells.
科学家第一次能够创造出一种抗癌细胞的化学成分。
For the first time ever, scientists have been able to create a chemical element that can fight cancer cells.
科学家们首次研制出了抵抗癌细胞的化学元素。
The valid means that constructs the atmosphere is a chemical element that USES flexibly the basic lines, main tone and patterns to constitute.
营造氛围的有效手段就是灵活运用基本的线条、主色调和图案构成的元素。
Isotope: One of two or more species of atoms of a chemical element having nuclei with the same number of protons but different Numbers of neutrons.
同位素：一种化学元素的两个或多个类型，它们的原子核具有相同的质子数，而中子数却不同。
The isotopes of a given element have the same chemical properties but slightly different physical properties.
一个特定元素的同位素具有相同的化学特征，但在物理性质上有一些细微差异。
Each pattern stands for a distinct chemical element, and so different sets or patterns of spectral lines mean that the star has a different chemical composition.
每一种样式代表一种不同的化学元素，所以光谱线的不同集合或模式意味着这颗恒星有不同的化学成分。
This light is passed through a prism, which breaks it up into a spectrum, and a unique pattern, kind of like a chemical fingerprint of spectral lines for that element appears.
铁块会一直加热，直到到达某一燃点，便会辐射出光来；而当它的光线穿过一块棱柱时，棱柱就会分割光线，形成光谱。
Isotopes are different atomic versions of a particular chemical element.
同位素是一个特定化学元素的不同原子变种。
Similarly, in a chemical formula the subscript comes after the element name, not before.
类似地，化学方程式中要先写元素名字后写个数，而不是反着。
The chemist found a new chemical element.
那位化学家发现了一种新的化学元素。
Hydrogenation: Chemical reaction between molecular hydrogen (H2) and another element or a compound, usually in the presence of a catalyst.
氢化：通常在有催化剂的情况下，氢分子(H2)与其它元素或化合物之间的化学反应。
Also, silicon is a very common chemical element, whereas germanium is relatively rare.
除此之外，相对于含量稀少的锗元素，硅是相当普遍的化学元素。
The individual chemical property of the element made it a good catalyst.
这种元素的特殊化学特性使其成为一种好的催化剂。
It is the discovery of a new chemical element.
它是一种新化学元素的发现。
A nonmetallic element, such as arsenic, that has some of the chemical properties of a metal.
准金属，类金属具有一些金属化学特性的非金属元素，例如砷。
A common sense, human body is also made up of chemical element is introduced in this paper.
本文介绍了人体也是由化学元素组成的这个普通道理；
A solid powdered chemical element was used to replace the mother liquid of the MS medium.
用固体粉状化学元素取代MS培养基中的母液，制作培养基。
This study investigated chemical element concentrations in calcite, calcareous soil and restored plants in a limestone rocky desertification area in Huaxi, Guizhou Province.
对贵州花溪区石灰岩、石灰土及定居植物中化学元素含量进行研究。
The correlation analysis showed that the spectrum from a morphological element is highly correlated with that from the corresponding purified chemical.
基元谱与提纯化学物质谱的相关分析印证了组织形态基元谱的来源。
The atom is the smallest particle of an element that can have a separate existence of take part in a chemical reaction.
原子是元素的最小粒子，它能单独存在或参与化学反应。
Kind of like a chemical finger print of spectral lines for that element appears.
一个化学元素的样式就被光谱线显现出来了。
The chemical element lifted to see to see everything of in front, as if deep in thought, go in toward a restaurant.
元素抬眼看了看面前的一切，若有所思，向一家饭馆进去。
A structure the size of an atom represents a fundamental limit: to make anything smaller would require manipulating atomic nuclei—essentially, transmuting one chemical element into another.
单原子的结构是个基本极限：若要做得更小，基本上就得操控原子核了，这可是把一种化学元素转换为另一种。
Neutron Activation Analysis(NAA) is a valid nuclear analytical technique, whichoccupy an important position in the chemical element analysis.
中子活化分析是一种有效的核分析技术，在微量和痕量元素分析中占有重要地位。
Neutron Activation Analysis(NAA) is a valid nuclear analytical technique, whichoccupy an important position in the chemical element analysis.
中子活化分析是一种有效的核分析技术，在微量和痕量元素分析中占有重要地位。
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