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- hydrogen isotope ratio 氢同位素比值
- The isotope ratio is directly used for comparing oils or gases. 同位素比率直接用于比较各种石油或天然气。
- The atmospheric helium isotope ratio: Is it changing? 大气氦同位素比率在变化吗?
- WHAT CAN WE LEARN FROM OXYGEN AND HYDROGEN ISOTOPE COMPOSITIONS OF TREE-RING CELLULOSE IN HIGHER PLANTS? 树年轮纤维素稳定同位素比率的生态学意义?
- Only a lighter atomic nuclei fusion can occur, such as the hydrogen isotope deuterium and tritium, and so on. 只有较轻的原子核才能发生核聚变,比如氢的同位素氘、氚等。
- Abstract The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis. 摘要 同位素分馏效应是影响氢同位素准确分析的主要因素。
- The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis. 同位素分馏效应是影响氢同位素准确分析的主要因素。
- Stable isotope ratio analysis is an effective method for the identification of fruit juice adulteration. 稳定同位素分析法就是根据这种差异对掺假果汁进行准确鉴别的有效方法。
- Thermal cycling absorption process(TCAP),a semi-continuous hydrogen isotope separation process,is of many unique advantages. 对热循环吸附法(TCAP)全回流模式和生产模式下的氕-氘分离实验进行了研究。
- There are differences between natural and adulterated juices in stable isotope ratio. 天然果汁与掺假果汁之间在稳定同位素比率方面存在着差异。
- To be sure, some scientists suggest that life could have evolved differently on Titan than on Earth or that the inorganic isotope ratio may be different there. 不过,还是有些科学家指出,可能是泰坦和地球上的生命演化过程不同,或是无机同位素比率不一样。
- Based on density-functional theory (DFT) and density-functional perturbation theory (DFPT) we have discussed systematically the hydrogen isotope effects on the thermodynamic properties of TiX2 (X=H, D, and T) system. 应用基于密度泛函理论(DFT)和密度泛函微扰理论(DFPT)的 PWSCF和PHONONS第一原理计算程序系统研究了TiX2(X=H,D,T)系统热力学特性的同位素效应。
- Analytical services include potassium-argon age determinations, stable isotope ratio analyses, radiocarbon age determinations as well as other radiometric analyses. 分析包括钾-氩测年,稳定同位素丰度分析,放射性碳测年,以及其他放射性分析。
- Hydrogen isotope separation with cryogenic distillation device is a main way to obtain high pure tritium, which is an important application in the atomic energy field with cryogenic technique. 氢及其同位素的精馏分离是制取高纯氚的一个主要方法,是低温技术在原子能领域的重要应用。
- An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers. 使用同位素比值法有着一个明显的局限因素,就是要用质谱仪进行分析。
- In certain fusion processes, among nuclei of the hydrogen isotopes, neutrons of high energy are liberated. 在氢同位素原子核中的某些熔合过程中,会释放出高能中子。
- It will use magnetic fields to confine hydrogen isotopes and heat them to hundreds of millions of degrees Celcius. 它利用磁场约束氢的同位素并将其加热到数亿摄氏度。
- CAN STABLE ISOTOPE RATIOS PROVIDE FOR COMMUNITY-WIDE MEASURES OF TROPHIC STRUCTURE? 稳定性同位素与群落营养结构?
- Dissociative adsorption study of hydrogen isotopes on metal platinum surface by thermodynamic computation[J]. 引用该论文 胡胜;汤丽娟;朱正和;朱祖良;罗顺忠;王和义;罗阳明;肖成建.
- The finite difference method is used to calculate the multi dimensional diffusion of hydrogen isotopes in materials. 研究了氢同位素在材料中多维扩散行为的有限差分计算方法。