fission

英 [ˈfɪʃn]

美 [ˈfɪʃn]

n.  (核)裂变，分裂; 细胞分裂; 裂体生殖; (化学键)断裂; 裂变

现在分词：fissioning　

CET6TEM8化学

BNC.26755 / COCA.19394

牛津词典

noun

• （核）裂变，分裂
  the act or process of splitting the nucleus (= central part) of an atom, when a large amount of energy is released
• 细胞分裂；裂体生殖
  the division of cells into new cells as a method of reproducing cells
• （化学键）断裂；裂变
  the breaking of a chemical bond between two atoms

柯林斯词典

• (核)裂变，分裂
  Nuclearfissionis the splitting of the nucleus of an atom to produce a large amount of energy or cause a large explosion.

英英释义

noun

• a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
  Synonym:nuclear fission
• reproduction of some unicellular organisms by division of the cell into two more or less equal parts

双语例句

• In fission processes the fission fragments are very radioactive.
  在裂变过程中，裂变碎片具有强烈的放射性。
• It avoids these problems of duplication and fission.
  它能避免复制和分裂的问题么。
• The time nuclear fission takes place vast energy is released.
  核裂变发生时，放出大量的能。
• Nuclear fission has contributed to our society some new phrases& critical mass and critical size.
  原子核裂变给我们的社会带来了一些新词汇“临界质量”和“临界大小”。
• None of the xenon isotopes we measured were the direct result of uranium fission.
  我们所测量到的氙同位素，根本都不是直接由铀的核分裂而来。
• When atoms split, the process is called "fission".
  原子分裂时，其过程被称为裂变。
• Nuclear fission, a process whereby a uranium nucleus absorbs a neutron, is not.
  核裂变却是一个铀核吸收一个中子，而不是其它过程。
• We have a yield rate of neutrons, if a fission occurs at energy E this is the spectrum of neutron energies that are produced.
  我也有中子的收益率，如果一个裂变发生了在能量E，这是，产生的中子能量的光谱。
• The discovery of the nuclear fission is a new departure in physics.
  核分子分裂的发现是物理学上的一个新起点。
• The latter property of nuclear fission has a significant implication.
  核裂变的这后一个性质有一个重要的应用。