同位素

The implications and the results of the transition metal isotopes in the study of seafloor hydrothermal activity have been introduced.

主要介绍了过渡族金属元素同位素在现代海底热液活动研究中的应用以及取得的重要成果。

George Kowalchuk and colleagues grew samples of fescue and sedge at CO2 concentrations near to and at about double current atmospheric levels, by using CO2 that had been synthesized in a process that tags the carbon 13 isotopes in the gas.

George Kowalchuk及其同事在二氧化碳浓度接近当前大气二氧化碳浓度以及浓度加倍的环境下种植了羊茅和莎草的样本，他们使用了在合成过程中用碳13同位素标记的二氧化碳。

It is based on the Seebeck effect of semiconductor. It has many advantages such as quiet, small size, light weight, no mechanical moving parts, long life, high reliability, no pollution and so on.

利用工业废热、放射性同位素、烃燃料等作为热源制成的半导体温差发电装置已广泛应用于军事、远距离通讯、远程空间探测器等特殊的领域中。

Such a regularity indicates that nitrogen isotope abundance could serve as a sensitive indicator in evaluating the plant decomposition degree and the total nitrogen level and potential in soil.

氮的同位素自然丰度组成对于植物分解程度的灵敏响应，使其可以作为一种指示植物-土壤体系中氮素转化程度与趋势以及评估土壤中氮的有效性的指标，应用于自然生态研究。

Within a lateral transection profile that traversing a auriferous quartz vein, the contents of U and Th decrease as the K-feldsparthization and silicification increase, while the V1 and V2 have a similar variation trend with the exception of the samples near the auriferous vein.

在穿脉剖面上，随着钾、硅化蚀变程度的增加，U、Th含量降低，铅同位素矢量特征值V1、V2值随蚀变程度增加有降低的趋势，但近矿脉样品由于受矿化影响而不同于蚀变围岩。

Their advantages and disadvantages are compared. Some elements affecting the single-stage separation factor are discussed.

表明离子交换色谱法是一种极具潜力的硼同位素分离方法，具有高效节能的特点。

The paper expounds the sedimentology theory of paleoflood and the formation of siack water deposits, and demonstrates the field and experimental characters of slack water deposits.

并介绍了放射性同位素测年法等古洪水平流沉积物的主要测年方法。

Slack water deposits are indicators of water level and age of paleoflood. They can be identified using Quaternary Period geology and hydrology, and can be aged using radioactive isotopes or other methods.

平流沉积物是洪水水位和发生年代记录的载体，利用第四纪地质学和水文学可以把它发掘出来并用放射性同位素或者其它断代方法测定它发生的年代，再通过断面恢复，进行流量推求，这就是古洪水研究。

And looking back on his own academic work he showed a certain solidarity with his subject's sloppiness:"I'm very grateful that the isotopic composition of helium has not become a key matter of public interest."

回顾他自己的学术研究时，他表达了一些对其调查对象马虎的同袍情，"我很庆幸氦的同位素组成这研究没受到大众关注"。

1913 IsotopeOne of two or more atoms that have the same atomic number, but a different number of neutrons, Coined by Frederick Soddy.

同位素是指原子序数相同中子数不同的元素。这个词是由弗雷德里。索蒂（1877－1956，英国化学家，1921年获诺贝尔奖金）创造的。 fys中国英语学习网

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。