Question

isotope n.同位素 (1) 同位素比率直接用于比较各种石油或天然气。(2) 原子核质量和大小的不同引起同位素移动。 The atomic number is the number of protons in an atom's nucleus. Atomic mass adds to that the number of neutrons in the nucleus. Each element has a typical atomic mass, but when the number of protons stays the same and the number of neutrons changes, you have an isotope. These can be stable, like Deuterium, an isotope of Hydrogen that has one extra neutron, or they can be radioactive, like Plutonium-239, which is a component of nuclear waste.

Accepted Answer

英 ['aɪsətəʊp] 美 ['aɪsətoʊp] (1) The isotope ratio is directly used for comparing oils or gases.(2) Changes of nuclear mass and nuclear size cause isotope shifts. An isotope of a chemical element is an atom that has a different number of neutrons (that is, a greater or lesser atomic mass) than the standard for that element. 1[N-COUNT 可数名词]同位素 Isotopes are atoms that have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties.   [TECHNICAL 术语]...tritium, a radioactive isotope of hydrogen.氢的放射性同位素氚

英语单词	isotope
英美音标	英 ['aɪsətəʊp] 美 ['aɪsətoʊp]
中文释义	n.同位素
英语例句	(1) The isotope ratio is directly used for comparing oils or gases. (2) Changes of nuclear mass and nuclear size cause isotope shifts.
中文例句	(1) 同位素比率直接用于比较各种石油或天然气。 (2) 原子核质量和大小的不同引起同位素移动。
vocabulary简明	An isotope of a chemical element is an atom that has a different number of neutrons (that is, a greater or lesser atomic mass) than the standard for that element.
vocabulary扩展	The atomic number is the number of protons in an atom's nucleus. Atomic mass adds to that the number of neutrons in the nucleus. Each element has a typical atomic mass, but when the number of protons stays the same and the number of neutrons changes, you have an isotope. These can be stable, like Deuterium, an isotope of Hydrogen that has one extra neutron, or they can be radioactive, like Plutonium-239, which is a component of nuclear waste.
柯林斯解释	1 [N-COUNT 可数名词]同位素 Isotopes are atoms that have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties. [TECHNICAL 术语] ...tritium, a radioactive isotope of hydrogen. 氢的放射性同位素氚

Number Isotope Neutrons Atomic Nuclear Protons Mass Element