放射性

Low-temperature hydrothermal processes can mask evidence of high-temperature processes in the oxygen isotope system, and in radiogenic systems such as Re/Os and Pb where involved elements may be mobile under hydrothermal conditions, or host phases may close to exchange and uptake at different temperatures.

在氧同位素体系和放射性同位素体系(如Re/Os、Pb同位素体系)中，元素在热液条件下活动性强或主相没有发生同位素交换与吸收，都会导致低温热液过程掩盖高温过程。

The Sr Nd Pb isotopic compositions of crust lavas are characterized by higher initial Sr isotopic ratios,lower Nd isotopic ratios,large εNa and enrichment in radiogenic lead.

罗布莎蛇绿岩是雅鲁藏布江蛇绿岩带东段出露较好，也是研究程度较高的（蛇绿岩片之一，其壳层熔岩的Sr，Nd，Pb同位素组成具有较高的ISr值，较低的Isd值，大的εNd值和富集放射性成因铅的特征。

Now I'm injecting a material that's tagged with a radioisotope.

我现在在注射一种以放射性同位元素做为标记的物质

It will be an excellent alternative for instruments based on radioisotope or fluorescent-labeling techniques.

它应该是取代放射性同位素或荧光标签技术的另一个极佳选择。

Their research and education are supported by a strong infrastructure, including the Gene Research Center, the Research Center for Experimental Biology and the Radioisotope Research Center.

该学院的研究和教育有很强的基础设施支持，包括基因研究中心、实验生物学研究中心和放射性同位素研究中心。

However, compared to other approaches, such as radioisotope tracers or mass analysis by mass spectrometry, NMR is sensitivity limited.

但是同其他检测方法相比，如放射性示踪剂或质谱分析方法，NMR的敏感性是有限的。

The exploitation of the equipment avoids the side effects of using liquor radioisotope.

该机的研发避免了患者服用同位素放射性液体对人体所带来的副作用。

And then some problems existing in present groundwater dating are discussed. Finally, the trend of study of groundwater radioisotope dating methods and the urgent problems which should be strengthened are pointed out.

并讨论了目前地下水测年方法中存在的一些问题，指出地下水放射性同位素测年方法研究的发展趋势和亟待加强研究的关键问题。

The machine can produce radioisotope capsule at different dose for treating different patients.

该设备能够按照要求生产出不同放射性剂量的同位素胶囊，供给患者服用。

Based on elaborating groundwater radioisotope dating and classification of dating methods, the relevant groundwater dating methods have been analyzed and appraised at home and abroad.

在详细阐述地下水放射性同位素测年及分类方法的基础上，对国内外有关地下水测年方法的原理和优缺点进行了分析评述。

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。