| 单词 | nuclei |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔Mössbauer effect〕The recoilless emission of gamma rays by radioactive nuclei of crystalline solids, and the subsequent absorption of the emitted rays by other nuclei.莫士包效应：由晶体状物质的放射性原子核产生的γ射线发出的无后坐力辐射，以及放射线被其他原子核的随后吸收美国传统〔autogamy〕Biology The union of nuclei within and arising from a single cell, as in certain protozoans and fungi.【生物学】 自核交配：某些原生动物或真菌中发生于或在单个细胞内细胞核的接合作用美国传统〔binucleate〕Having two nuclei.有两个核的美国传统〔dikaryon〕The state in certain fungi in which each compartment of a hypha contains two nuclei, each derived from a different parent.双核：某种真菌中的状态，在这种真菌中，每个菌丝体都含有两个核，而每个核都是从不同的母体上衍生的美国传统〔diplosis〕The formation during fertilization of the diploid number of chromosomes by the fusion of the nuclei of two haploid gametes.倍加作用：由两个单倍配子细胞核结合而使染色体体二倍数形成受精美国传统〔fusion bomb〕A nuclear bomb, especially a hydrogen bomb, that derives its released energy principally from fusion reactions among light nuclei.热核弹：一种主要从轻核聚变反应中释放能量的核弹，尤指氢弹美国传统〔fusion〕Physics A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy.【物理学】 核聚变：一种由原子核结合成更大的核，同时释放出能量的核反应美国传统〔gynogenesis〕Parthenogenesis in which the egg is activated by sperm, but without fusion of the egg and sperm nuclei.雌核生殖：一种单性生殖，精子激活卵子，但是卵子和精子核没有融合美国传统〔half-life〕Physics The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay.【物理学】 半衰期：放射性样品的原子核经历一半放射性衰变所需要的时间美国传统〔heavy ion〕The nucleus of a heavy element. When such nuclei are caused to collide at high velocities, new elements are created.重离子：重元素的原子核，当此类原子核们引发高速碰撞，新元素便会产生美国传统〔heterokaryon〕A cell having two or more genetically different nuclei.异核体：有两个或更多基因不同的核的细胞美国传统〔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〔internuclear〕Located or occurring between nuclei.核间的：位于或发生于核之间的美国传统〔isotone〕One of two or more atoms whose nuclei have the same number of neutrons but different numbers of protons.同中子异荷素；等中子异位素：两个或更多其原子核含有相同数量的中子却含不同数量质子的原子中的任一个美国传统〔karyogamy〕The coming together and fusing of cell nuclei, as in fertilization.核融合，核配合：细胞核的融合，如受精过程中美国传统〔macronucleus〕The larger of two nuclei present in ciliate protozoans, which controls nonreproductive functions of the cell, such as metabolism.大核：原生动物纤毛虫类体中两个细胞核中较大的一个，控制细胞的非生殖性功能，如新陈代谢美国传统〔micronucleus〕The smaller of two nuclei in ciliate protozoans that contains genetic material and functions in reproduction.小核，微核：原生动物纤毛虫类体内两个细胞核中较小的一个，其中含有基因材料和繁殖功能美国传统〔mononucleosis〕The presence of an abnormally large number of white blood cells with single nuclei in the bloodstream.单细胞增多症：血液中单核白血细胞的异常增多美国传统〔nuclear physics〕The scientific study of the forces, reactions, and internal structures of atomic nuclei.核物理学：关于原子核的力，反应和内部结构的科学或学科美国传统〔nuclear〕Physics Of or relating to atomic nuclei.【物理学】 原子核的或关于原子核的美国传统〔nucleonics〕The study of the behavior and characteristics of nucleons or atomic nuclei.核子学：研究核子或原子核变化和特点的学科美国传统〔nucleophile〕A chemical compound or group that is attracted to nuclei and tends to donate or share electrons.亲核试剂：受核吸引并易于转移或共用电子的化学化合物美国传统〔nucleoprotein〕Any of a group of substances found in the nuclei of all living cells and in viruses, composed of a protein and a nucleic acid.核蛋白：在所有活细胞和病毒的核中都可以找到的物质，由蛋白质和核酸构成美国传统〔nucleosynthesis〕The process by which heavier chemical elements are synthesized from hydrogen nuclei in the interiors of stars.核合成：较重的化学元素从星球内部的氢核合成的过程美国传统〔plasmogamy〕Fusion of two or more cells or protoplasts without fusion of the nuclei, as occurs in higher terrestrial fungi.胞质配合：发生在较高级的陆生真菌中的两个或多个细胞或原生质体的融合，而细胞核不融合美国传统〔polar nucleus〕Either of two nuclei located centrally in a flowering plant embryo sac that eventually fuse to form the endosperm nucleus.极核：位于一株开花植物的胚囊中央的两个细胞核的任一个，这两个细胞核最终融合而形成内胚乳细胞核美国传统〔pronucleus〕The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.原核，前核：在受精细胞核结合之前，精子或卵子的单倍体细胞核美国传统〔radioactivity〕Spontaneous emission of radiation, either directly from unstable atomic nuclei or as a consequence of a nuclear reaction.自动放射：自动地发出辐射，直接源于不稳定的原子核或是作为核反应的结果美国传统〔syncytium〕A mass of cytoplasm with many nuclei but no internal cell boundaries.多核体：有许多细胞核但内部没有细胞分界线的一团细胞质美国传统〔synkaryon〕The nucleus of a fertilized egg immediately after the male and female nuclei have fused.受精核：雄性与雌性胞核溶合后受精卵细胞的细胞核美国传统〔telophase〕The final stage of mitosis or meiosis during which the chromosomes of daughter cells are grouped in new nuclei.末期：有丝分裂或成熟分裂的最后阶段，在此期间子细胞的染色体被聚集在新细胞核中美国传统It is possible to transplant chromosomes in cell nuclei. 移植细胞核内的染色体是可能的。译典通The rate at which nuclei fuse is much greater when the plasma is hotter.当血浆温度更高时，细胞核的结合比例会高得多。剑桥国际 |
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