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- fission of uranium atom 铀原子裂变
- In 1945, all mankind came to know and fear the nucleus when the fission of 1 kg of uranium devastated Hiroshima. 1945年，当1公斤的铀裂变使广岛成为废墟时，全人类开始知道原子核并对它产生了恐惧。
- Nuclear fission is initiated when the nucleus of a uranium atom is hit by a neutron and split into two halves. 铀原子核被中子撞击后,会分裂成两份,产生核裂变。
- "atom bomb: an explosive weapon of great destructive power derived from the rapid release of energy in the fission of heavy atomic nuclei, as of uranium 235." 原子弹: 一种具有巨大破坏力的爆炸性武器,它由重元素,如铀的裂变过程中迅速释放的能量所产生。
- The life develops as the fission of the cells. 随着细胞的分裂, 生命开始发育。
- Energy is released by the fission of atomic nuclei. 能量是由原子核分裂释放出来的。
- U235,U238,and U239 are three isotopes of uranium. 铀235、铀238和铀239是铀的三种同位素。
- Secular disequilibrium of uranium can lead to erroneous results. 铀的永久不平衡会导致错误的结果。
- The price of uranium duly tumbled, and lots of mines closed. 铀价因而下跌，许多矿井关闭。
- The energy released in the fission of one uranium nucleus is about 50 million times greater than that released when a carbon atom combines with oxygen atoms in the Burning of coal. 一个重原子核分裂为质量相近的两个碎片,同时释放大量能量,这些能量来自亚原子粒子的结合能。一个铀原子核裂变时所释放的能量大约是煤炭燃烧时一个碳原子与一个氧原子结合所释放能量的5,000万倍。"
- 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。
- Indirect ionization by neutrons can also result from fission of plutonium or uranium isotopes. 通过使钚或铀同位素裂变，中于也能产生间接的电离作用。
- Uranium analysis by the emission of delayed neutrons, following fission of U235, has been described by Amiel. 阿密尔论述了应用U235裂变后产生的缓发中子流分析铀的方法。
- Only very large number of quality as the nucleus of uranium, thorium, and so can a nuclear fission. 只有一些质量非常大的原子核像铀、钍等才能发生核裂变。
- So little is known about it, because there is only about 1 ATOM OF FRANCIUM IN A CUBIC FOOT OF URANIUM ORE! 对它所知甚少,因为在1立方英尺的铀矿石中,仅有1个钫原子!
- The fission of the cell could be inhibited with certain chemicals. 细胞的裂变可以通过某些化学药品加以抑制。
- Energy produced by nuclear fission of heavy atomic nuclei. 由大质量的原子核的核分裂产生的能量。
- They went over nationwide in search of uranium mines. 他们为了探寻铀矿走遍了全国。
- The organics and impregnations of uranium are everywhere coextensive. 有机物和铀的浸染到处是共同延伸的。
- The atom bomb is of catholic concern. 原子弹受到普遍的关注。
