同位素

So we've known where and when the parent isotope was made, but not how it got here.

因此，我们知道这种母同位素是在何时何处产生的，但尚不清楚它是如何产生的。

One way to tell if life is the source of the gas is by measuring isotope ratios.

其中一个方法判断生活的来源是通过测量气体同位素比率。

"What is the lightest element on Earth, with no stable isotope?"

地球上没有稳定同位素的最轻的物质是什么？

The component and carbon isotope of natural gas are mainly controlled by the type of organic matter and maturity.

天然气的组分和碳同位素主要受母质类型和成熟度双重因素的控制，这是我们研究天然气的基础。

The quantitative research of climatic factors by Oxygen stable isotope is an important aspect to probe in this paper.

同位素的古气候定量研究是本次重点探索的问题。

That is because meteorites contain a lot more of an isotope called magnesium-26 than would be expected.

因为陨石含有比预期要多的一种叫镁-26的同位素。

One such process goes by the name of "isotope self-shielding."

像这样的进程被命名为"同位素自屏蔽隔离"。

Any of several radioactive gases that are isotope s of radon and are products of radioactive decay.

"几种氡的同位素的放射性气体，是放射性物质衰变的产物。"

The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate.

氧同位素组成是一个非常有效的示踪硫酸盐的起源和形成环境的工具。

In most cases, only stable isotope s of elements are found in nature.

在大多数情形下，自然界中只能找到稳定同位素。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。