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.
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。
Ephraim Fischbach, a physics professor at Purdue, was looking into the rate of radioactive decay of several isotopes as a possible source of random numbers generated without any human input.
普渡大学物理教授EphraimFischbach，将探测几种同位素的放射性衰变速率的方法作为一种没有人为输入因素干扰的产生随机数的可能方法。
Such materials bulk density of small, source, most widely price is low, but the hygroscopicity, damp easily after decay, and high temperature burning or easy to resolve.
此类材料容重小，来源广，多数价格低廉，但吸湿性大，受潮后易腐烂，高温下易分解或燃烧。
The analysis shows that increasing the excitation frequency of the source reduces the decay rate of the ground vibration.
分析表明，对理想弹性半空间来说，增大扰频会减小地面波动衰减率。
A simple and flexible signal source of multiple decay was designed with the linear adding of many rc charging signals.
用多个RC充电过程信号的线性叠加设计了一个复杂衰减过程的信号源，简单而且具有灵活性。
The influence of seriate line-source to the decay of solute concentration in streams is not simply equal to the addition influence of several point-sources.
“连续线源”对河流水体中溶质衰减过程的影响，不简单等同于几个“点源”的迭加。
The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet's interior provides a continuing heat source.
研究人员发现，在地球传送到大气的热流中，地球内部放射性同位素衰变所产生的热量占了其中一半。
The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet's interior provides a continuing heat source.
研究人员发现，在地球传送到大气的热流中，地球内部放射性同位素衰变所产生的热量占了其中一半。
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