同位素

Yet Australia has problems of its own with its single, albeit newish reactor, and has recently been importing isotopes from South Africa.

尽管澳大利亚唯一的反应堆还是较新的，但仍存在不少问题，最近澳大利亚一直在从南非进口同位素。

The nitrogen cycle provides essential nutrients to the biosphere, but its antiquity in modern form is unclear.

据2月20日的《科学》杂志报道说，在一个有25亿年历史的澳大利亚页岩中所测到的氮和碳同位素也许可以捕捉到现代需氧氮素循环的最初日子，该循环是由远古的微生物活动所驱动的。

Being a noble gas , it resists chemical bonding with other elements and is thus easy to purify for isotopic analysis.

由于氙是惰性的，不易与其他元素产生化学键，因此很容易纯化以进行同位素分析。

When the distribution of important fission products is calculated, emphasis is placed on the noble gas radionuclides and upon radioisotope of iodine because of their great contribution to accident dose.

在对重要裂变产物分布的仿真计算中，重点放在了惰性气体核素和碘的放射性同位素上，因为它们是事故中放射性剂量的重要来源。

It is essential to trap metastable noble gas atoms with high efficiency in the studies of interactions between cold atoms and in dating applications through the detection of radioactive isotopes.

高效率地冷却和囚禁亚稳态惰性元素原子，可用以研究冷原子间的相互作用，以及通过对放射性同位素的检测实现样品年代测定。

Contamination of noble gas in the crude oil of Gangxi oilfield.

以黄骅坳陷港西油田为例，测试并研究了原油中的稀有气体氦和氩同位素组成，并探讨了其示踪作用。

Taking Gangxi Oilfield in Huanghua Depression as an example,the isotopic compositions of noble gas in crude oil and their tracing significance were investigated.

以黄骅坳陷港西油田为例，测试并研究了原油中的稀有气体氦和氩同位素组成，并探讨了其示踪作用。

Protein protein interactions play vital roles in numerous biological processes. These interactions often result in formation of insoluble and noncrystalline protein assemblies.

在这个研究中，杨俊和特拉华大学的同事Tatyana Polenova设计了一组新脉冲序列，他们用这组脉冲序列研究了用不同同位素标记的thioredoxin蛋白质组装体的分子内和分子间的界面。

He won a 922 Nobel Prize for developments that led to the discovery of isotopes in nonradioactive elements.

他因在非放射性元素的同位素的发现过程中取得重大进展而获922年诺贝尔奖

In order to quickly screen and detect the enzyme activity of UNG, a nonradioactive enzyme assay were developed.

为了快速有效地进行重组表达产物的酶活性筛选和鉴定，我们建立了一套实用的非同位素检测技术。

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％。