isotopes的例句大全

Ions of different isotopes converge at different points on the photographic plate.

在照相底板上不同的同位素的离子会聚于不同点.

The inferno spewed a deadly plume of radioactive isotopes into the atmosphere.

这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层.

A detailed search for the isotopes of all the elements required a more preci se technique.

仔细研究所有元素的同位素需要更精密的技术.

Later he named these separate forms isotopes.

后来他称这些不同的形式为同位素.

There are two main types of uses of radioactive isotopes in biochemistry.

在生物化学中,放射性同位素主要有两方面的应用.

Tritium is one of the mildest radioactive isotopes.

氚是最和缓的放射性同位素之一.

Indirect ionization by neutrons can also result from fission of plutonium or uranium isotopes.

通过使钚或铀同位素裂变,中于也能产生间接的电离作用.

The large number of radioactive isotopes among the heavy elements fit into three series.

重元素中的大量放射性同位素分属于三个系列.

Extensive research has shown that fractional atomic masses always mean mixture of isotopes.

进一步的研究揭示出:部分原子质量常是同位素的混合物.

For that reason, however, separating the isotopes of an element can be exceedingly difficult and costly.

不过, 也正因为这样, 要把某一元素的各同位素分离开来,就可能是极其困难的事,要付出很高的代价才能办到.

The radium isotopes are absorbed to an appreciable extent through the human and animal gut.

镭的同位素通过人和动物的肠子时有很大部分被吸收.

The interval is two mass units because these isotopes of the elements differ by two neutrons.

因为这些元素的同位素相差两个中子,所以其间隔为两个质量单位.

More reactive are the heavier isotopes of hydrogen, deuterium and tritium.

更为活跃的是氢的较重同位素, 氘和氚.

the many isotopes of carbon

碳的诸多同位素

Atoms of the same element that differ in their atomic weight are called isotopes.

具有不同原子量的同一种元素被称为同位素.

C-isotopes in CH_4 is fairly light with a δ~ ( 13) C_1 of-52.01%, such gas lies within the range of a mixture of biogenic gas and pyrolytic gas.

天然气中甲烷碳同位素组成较轻，δ~（13）C1值为-52.03‰，分布在生物气与热解气的混合区内。

Stable isotopes are non-radioactive, so they are safe and suitable for the study of human nutrition.

稳定同位素不具有放射性, 使用安全,适于人体营养学研究.

Doubly labeled water ( DLW) method is the most correct method for measuring energy of wild animals, and the most difficult key in the method is the quantitative analysis for isotopes of body water in animals.

双标水（doubly labeled water，DLW）法是研究动物野外能量代谢最准确的方法，其中最关键、最困难的环节是同位素的定量分析。

Uranium isotopes and their daughters emit-rays and X-rays during the decay process, their peak area and relative efficiency can be calculated through spectrum analysis.

在衰变过程中，铀及其衰变子体放射出γ射线和特征X射线，通过能谱分析可以求出它们的峰面积和相对探测效率。

Energy Level Distribution for Ba Isotopes and E3 Transition Rates

Ba同位素的能级分布及E3跃迁几率