| 单词 | 同位 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔D〕The symbol for the isotope deuterium.氘的化学符号：同位素氘的符号美国传统〔IW〕Isotopic weight.同位素量美国传统〔T〕The symbol for the isotope tritium.同位素氚的符号美国传统〔apposition〕A is in apposition to B. (或 A and B are in apposition.) 甲与乙同位。(如在 Davis, my neighbour, is a schoolteacher 一句中, my neighbour 与 Davis 同位,my neighbour 作主语 Davis 的同位语;又如在 The fact that he is wrong is obvious 一句中, fact 与that he is wrong也是同位)英汉大词典〔apposition〕In the expression "my brother Joe", "my brother" and "Joe" are in apposition.在短语my brother Joe中，my brother 和 Joe 是同位语。剑桥高阶〔apposition〕In the phrase ‘Paris, the capital of France’, ‘the capital of France’ is in apposition to ‘Paris’.在短语 Paris, the capital of France 中，the capital of France 是 Paris 的同位语。牛津高阶〔apposition〕In “my friend the doctor,” the word “doctor” is in apposition to “my friend.” 在my friend the doctor中，doctor和my friend是同位语。韦氏高阶〔apposition〕The relationship between such nouns or noun phrases.同位关系：这样的名词之间或名词词组之间的关系美国传统〔appositive〕A word or phrase that is in apposition.同位语，同位短语美国传统〔appositive〕Of, relating to, or being in apposition.同位的：属于、关于或处于同位的美国传统〔emanation〕Chemistry Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.【化学】 射气：几种氡的同位素的放射性气体，是放射性物质衰变的产物美国传统〔enrich〕Physics To increase the amount of one or more radioactive isotopes in (a material, especially a nuclear fuel).【物理学】 添加元素：增加一种同位素或更具有放射性的核素的数量于（一种物质，尤其是核燃料）美国传统〔fibula〕The corresponding bone in the hind leg of an animal.动物的腓骨：动物后腿骨中处于相同位置的那根骨头美国传统〔geochronometry〕Measurement of geologic time, as through isotopic radioactive decay.地质年代测定：通过放射性同位素衰变来测定地质年代美国传统〔heavy〕Physics Of or relating to an isotope with an atomic mass greater than the average mass of that element.【物理学】 重的：原子质量比该元素的平均原子质量重的同位素的或与之有关的美国传统〔hydrogen bomb〕An explosive weapon of enormous destructive power caused by the fusion of the nuclei of various hydrogen isotopes in the formation of helium nuclei.氢弹：一种爆炸性武器，具有极大的破坏力，这种破坏力由不同的氢同位素原子核构成氦原子核时所产生的核聚变引起美国传统〔isospin〕A quantum number related to the number of charge states of a baryon or meson.同位旋：与一个重子或介子的电荷状态数有关的一个量子数美国传统〔isotope〕One of two or more atoms having the same atomic number but different mass numbers.同位素：两个或更多具有相同原子序数却具有不同的质量数的原子中的一个美国传统〔isotopic spin〕An isospin.同位旋美国传统〔mark〕A knot or piece of material placed at various measured lengths on a lead line to indicate the depth of the water.测标：系在测深绳上已测定过长度的不同位置之处的结或一种物质，以此来测定水深美国传统〔platoon〕If I can't play him every day, I'll platoon him in left field.我若不能让他每天上场,便让他在左外场打同位替补。英汉大词典〔platoon〕If the coach can't play her every day, he'll platoon her in right field.教练若不能让她每天上场，便让她在右外场打同位替补。21世纪英汉〔radioecology〕The study of the effects of radiation and radioisotopes on an ecological population or community.放射性生态学：对放射性和放射性同位素对生态群落的影响的研究美国传统〔radioiodine〕A radioactive isotope of iodine widely used as a tracer in medical diagnosis.放射性碘：碘的一种放射性同位素，广泛地用于医学诊断作为追踪剂美国传统〔radioisotope〕A naturally or artificially produced radioactive isotope of an element.放射性同位素：天然存在或人工合成的某种元素的有放射性的同位素美国传统〔radiolabel〕A radioactive isotope used as a tracer; a radiotracer.用作追踪剂的放射性同位素；放射性追踪剂美国传统〔radiolabel〕To tag (a hormone, an enzyme, or other substance) with a radioactive tracer.放射性同位素追踪剂：同放射性追踪剂（荷尔蒙、酶或其它物质）美国传统〔radiotherapy〕Treatment of disease with radiation, especially by selective irradiation with x-rays or other ionizing radiation and by ingestion of radioisotopes.放射疗法：用放射进行的疾病治疗，尤指用X射线或其它电离辐射的有选择放射和吞下放射性同位素美国传统The most stable isotope of plutonium has a half-life of almost 25000 years.钚最稳定的同位素的半衰期为25000年。剑桥国际 |
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