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- gram atomic weight 克原子量
- Who knows the atomic weight of the hydrogen atom? 谁知道氢原子的原子量究竟是多少?
- Molecular weight is expressed in the same unit as atomic weight. 分子的重量和原子的重量用相同的单位表示。
- Mol anlar weight is express in the same unit as atomic weight. 分子的重量和原子的重量用相同的单位表示。
- Hydrogen is the lightest element with an atomic weight of 1.008. 氢是最轻的元素，原子量为1.;008。（介词省译）
- An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2.014. 氘氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2。014
- Electrons weigh very little, so they aren't even counted in the atomic weight. 电子非常轻，因此在原子量中甚至没有计算它。
- The atomic weight is a ratio quite distinct from the weight in grams. 原子量是与以克为单位的重量完全不同的比率。
- Molecular weights are expressed in the same units as atomic weights. 分子的重量和原子的重量用相同的单位表示。
- An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2. 氘氢的一种同位素,在其原子核内有一个质子和一个中子,其原子重量为2。
- An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.014. 氘：氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2.;014
- Mobile dictionary that contains information such as atomic weight, date of discovery, country of discovery etc. 移动字典包含资料，如原子的重量，日期的发现，国家发现等。
- An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.04. 氘：氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2.;04
- Periodic table (1869): Organized array of all the chemical elements in approximately increasing order of their atomic weight. 周期表(1869):所有的化学元素按它们的原子量逐渐增加的顺序有组织地排列。
- Isotopes are different varieties of the same element, which have identical chemical properties but differ in atomic weight. 同位素是同一元素的不同种类，它们有着相同的化学特性但是原子重量不同。
- CSIRO scientist examines a silicon sphere, similar to one that will be used to determine the exact atomic weight of kilogram. 科学家们正在重新定义质量单位千克，在CSIRO的光学专家的帮助下，科学家建造了千克的新标......
- Radium, atomic number 88, atomic weight 2260254, is a natural radioelement, elements were derived from Latin, is intended to "ray. 镭，原子序数88，原子量2260254，是一种天然放射性元素，元素名来源于拉丁文，原意是“射线”。
- The atomic weight of an element or the molecular weight of a compound may be specified as amu/atom (molecule) or mass/mole of material. 一种化合物中的某种元素的原子重量或分子重量可表示为物质的原子或分子的摩尔质量。
- Contrary to electron-withdrawing groups,electron-donating groups in the phenyls of the compounds increase the fluorescence intensities,and decrease with atomic weight of halogens. 结果表明,卟啉化合物的苯基上供电子取代基能增加卟啉的荧光强度,而吸电子取代基作用相反;荧光强度随着卟啉的苯环上取代基卤素原子量的增加而降低;
