查询词典 decay

Because a radioactive form of argon is produced by decay of a naturally occurring radioactive potassium isotope, it can be used to date rocks and samples more than 100,000 years old.

因为它是稀有天然放射性同位素钾衰变而产生的，所以可以用来测定十万年以上的岩石年龄和采样。属类：-〖化学

And sure enough, only a few months later the decay of the atom nucleus in the radioactive element cobalt 60 revealed that it did not follow the principles of mirror symmetry.

几个月以后，利用放射性元素Co60的核衰变所做的实验表明镜像对称性不成立。

From radioactive equilibrium of natural radioactive decay series and content of several radioactive constituents, the formula for estimating activity of uranium ore and solid waste is derived and a case study on treatment engineering of decommissioning Linchang Uranium Mine is presented.

文摘：根据天然放射性衰变系列的平衡关系，推出了通过若干个而非全部放射性组分的监测数据来计算铀矿石和固体废弃物中放射性活度的公式，给出了临沧铀矿退役治理工程的估算实例。

In order to measure the mould level more quickly and accurately, the algorithms for real-time signal processing are developed to determine the pulse count rate, filter the signal and to compensate the decay of the radioactive source automatically.

为提高测量的统计精度和快速性，设计了信号实时处理算法测量信号脉冲计数率，进行信号滤波和放射源衰减自动补偿。

The whole process is completed within 200 s. The 91Sr product is radioactively pure, with an overall recovery better than 90%. The decontamination factor is greater than 10^2 for 92Sr, and better than 10^3 for other radionuclides. The quality of 91Sr specimens thus prepared can meet the requirements for its decay data measurements.

用辐照235U的裂变产物溶液进行了全流程验证，得到的91Sr溶液为放化纯，Sr的化学回收率大于90%，对92Sr的去污因子大于10^2，对其它主要核素的去污因子大于10^3，结果满足衰变数据测量的要求。

The process, sometimes referred to as "radiocarbon reading," involves measuring carbon decay.

过程中，有时称为"放射性碳含量，"碳涉及测量衰变。

Results ^18F-FET was prepared within 50 min with good radiochemical yield （40%, decay not corrected） and radiochemical purity （〉 97%）.

结果^18F-FET的合成时间约为50min，放化产率为40％，放化纯〉97％。

Radon is the crust of rock, soil radioelement arising from the decay of a radioactive inert gases, which are mainly the lungs and bronchial have on the human body radiation.

氡是地壳岩石、土壤中放射性元素衰变而产生的一种放射性惰性气体，它主要是对人体的肺和支气管产生辐射作用。

The temperature of basin was influenced greatly by matle heat conduction, magmatic heat and radioelement decay during the time of Early Permian-Late Permian rifting, while in the down-warped basin from the late stage of Late Permian to the present the temperature has been greatly affected by geothermal gradient and tectogenetic transition heat.

认为早二叠世-晚二叠世早期裂谷作用阶段盆地温度主要受地幔热传导、岩浆体热和放射性元素衰变的影响，晚二叠世晚期至今坳陷盆地阶段主要受地热增温率和构造运动转化热的影响。

Having the characteristics of fermentation or rancidity; tasting or smelling of decay.

腐酸的：具有发酵或腐败变质的特点；具有腐败的味道或气味的

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。