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汉语拼音：hé fǎn yìng

带电粒子、中子或光子与原子核相互作用，导致核的状态或结构发生改变的过程。

1. 重元素的原子核裂变或轻元素的原子核聚变的过程。这种反应能产生很大的能量。历史上第一个人工核反应是由 卢瑟福 于1919年实现的。核反应的研究对于了解原子核的结构，基本粒子间的相互作用，以及探索新能源等方面都有重大意义。

• Nuclear reactions may be induced by bombardment with a wide variety of particles.

  核反应可以通过各种各样粒子轰击来诱发.

• The gadget expedites the reaction of the nuclear reaction.

  这一装置可以加速核反应.

• In the history of the most serious nuclear reaction accident occurred.

  史上最严重的核反应事故发生地.

• Perhaps nuclear reactions, such as neutron capture?

  也许是某种核反应, 例如,中子捕获?

• Nuclear reactors might be used to melt frozen gases and eventually build up the atmosphere.

  核反应可以用来融化冰冻的气体最终形成火星大气层.

• A new model for light nucleus has been developed based on unified Hauser - Feshbach and exciton model.

  基于统一的豪泽—费许巴赫理论和激子模型,计算中子诱发轻核反应的新理论已经产生.

• Xenon possesses nine stable isotopes, produced in various proportions by different nuclear processes.

  氙具有九种稳定的同位素, 在不同的核反应中所产生的比例不同.

• These signals are produced by colliding stars or nuclear reactions in outer space.

  这些信号是由外层星球的相撞或核反应所产生的.

• Finally, after millions of years, and well after the nuclear chain reactions terminated, xenon 129 formed.

  最后, 经过了几百万年, 连锁核反应结束许久之后, 氙129才产生.

• Catalysts are said to reduce the energy of activation during the transition phase of a reaction.

  催化剂据说能减少核反应的过渡阶段的激活能量.