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- This postulate suggested a practical strategy for determining relative atomic weights from elemental percentages in compounds. 这一假设为测定由各种元素组成的化合物的相关原子的质量提供了实际操作策略。
- The Measurement of the Relative Atomic Weight of Magnesium Through Replacement by Using Microscale Chemical Laboratory Instruments 用微型化学实验仪器做置换法测定镁的相对原子量
- Atomic weight(also relative atomic mass) ratio between the mass of one atom of an element and one-twelfth of the weight of an atom of carbon 原子量(某元素的一个原子的质量与十二分之一的碳原子量的比值).
- relative atomic weight 相对原子量
- 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
- The paper points out that in the molecules including atoms,the electronegativity changes with the relative atoms or redicals,the form of hybridization and the oxidation state. 在多原子分子中,元素的电负性受所连原子(或基团)、原子的杂化方式及氧化态等因素的影响。
- 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......