对历年发表在同位素表上的资料进行了比较，发现人工放射性同位素的数目随时间呈极好的线性关系，新的人工放射性同位素发现率约为每年50种。
It has been found that the increase of the number of artificial radioisotopes with the years is beautifully linear with a discovery fate of approximately 50 new artificial radioisotopes per year.
目前已知的最大中子数是126,82个质子和126个中子组成了元素周期表中最重最稳定的同位素。
The highest known magic number for neutrons alone is 126. Lead, with 82 protons and 126 neutrons, is thus "doubly magic" and the heaviest stable isotope in the periodic table.
分析了采用不同率表电路的同位素仪表因放射源的衰减而对仪表测量误差的影响，得出了对仪表电路设计有参考价值的结论。
The influence of radioactive source decay on measuring error of the isotope instruments is analysed. The valuable conclusion for designing the circuit of instrument is obtained.
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