同位素

The gold-bearing albitite has a lower content of rare-earth elements and its REE patternsare flat with negative Eu-anomalies- Th...

矿物组合及铁白云石碳、氧同位素组成特征与秦岭地区热水沉积钠长石岩的基本相同。

Therefore, lake sediments have recorded eutrophication process of Lake Dianchi from oligotrophic lake to eutrophic lake. Especially in the past several decades, both autochthonous and allochthonous organic matter display rapid increasing. Combined with isotopic data, a conclusion is drawn that Lake Dianchi has entered into a hypereutrophic stage.

因此，湖泊沉积物记录了滇池从一个贫营养的湖泊演变成富营养化湖泊的过程，特别是最近几十年，滇池内源有机物和陆源有机物的输入都呈现快速增长的趋势，结合同位素组成特征表明滇池进入了重富营养化阶段。

UCR 3476 (ca 7300 to 7600 B.C.). Amino acids and stable isotopes indicate heavy dependence on anadromous fish.

UCR 3476 (约公元前7300－7600)。氨基酸和稳定同位素测定主要依靠鱼卵。

By the research on the high coalrank coalbed methane reservoir of the Qinshui basin including the study of the coalbed thermal evolution level, the temperature and pressure of inclusion in calcite or quartz reef in coalbearing strata, the palaeogeothermal analysis of the fission track of apatite and zircon, the anogenic isotopic age, and the geothermal flux caused by magmatic activity, we have proved the existence of the tectonic thermal event.

通过对沁水盆地高煤阶煤层气藏的实例进行剖析，从煤层的热演化程度，煤系地层的方解石脉、石英脉体中的包裹体温度和压力，磷灰石、锆石的裂变径迹古地温分析，中生代火成岩的同位素年龄，岩浆活动产生的大地热流值方面证明了构造热事件的存在。

Positron emission tomography is a kind of atraumatic technology which can detect in vitro the metabolic trace of emitted element in human body and can perform 3D imagings.

正电子发射断层成像技术是一种利用向生物体内部注入正电子同位素标记的化合物而在体外测量它们的空间分布和时间特性的三维成像无创检测技术。

The same set of ductile-rheologic shear deformational augen granite samples in the Yunkai uplifted area are measured by whole-rock Sm-Nd, Rb-Sr isotopic dating system method, obtaining respectively 1414±68Ma for Sm-Nd isochron age and 490±36Ma for Rb-Sr isochron age. These ages are respectively interpreted as the time of the granitic rock formation and the time of the tectono-thermal event of ductile-rheologic shear partial melting in Caledonian, indicating that the orogeny not only took place in Caledonian, but also the more important tectono-magmatic orogeny in the late Mesoproterozic Era and can be compared with the time of global Grenville orogeny.

对云开核部韧性-流变剪切变形眼球状花岗岩石样品进行了全岩Sm-Nd、Rb-Sr同位素年龄测定，获得1414±68Ma的Sm-Nd等时线和490±36Ma的Rb-Sr等时线年龄，它们分别代表这套花岗岩的形成时代和加里东期韧性-流变剪切部分熔融构造热事件发生时间，表明云开地区不仅在加里东期发生造山运动，而且在中元古晚期发生了更为重要的构造—岩浆造山运动，其时代与全球性的格林威尔造山运动时间可以对比。

A quantitative correlation between carbon and oxygen isotopes of authigenic carbonates from lake sediments can easily be derived.

用统计方法可以较直接地获得气候要素与湖泊自生碳酸盐碳、氧同位素的定量关系，避开考虑复杂的湖泊物理化学过程，为定量恢复古气候提供了一条便捷途径。

The curve of palaeotemperature is reconstructed on the base of authigenic carbonates oxygen isotope.

1，利用自生碳酸盐氧同位素重建了安固里淖湖区古温度曲线。8507aB.P。

On basis of measurement of homogeneous temperature of inclusions, analysis and calculation of δ〓C and δ〓O, and SEPM analysis, the author has studied the forming temperature of authigenic quartz and carbonate minerals for the first time. Furthermore, the author points out that it is unreasonable to recover paleo-geothermal gradient directly using homogeneous and modern burial depth.

作者在包裹体均一温度测量、碳氧同位素测量和计算及电子探针分析的基础上，首次对吐哈盆地侏罗系自生石英和碳酸盐矿物的形成温度进行了研究，确定了这两种成岩矿物的形成温度，并指出直接用包体均一温度和地层现埋深恢复古地温梯度存在不合理性。

Quantitative Estimation of paleoaltitude is the objective that geologistes have always sought.The research history of paleohypsometry which uses oxygen and hydrogen isotopic composition of authigenic mineral is overviewed. This method has much more potential to be applied to older periods than Cenozonic.

定量恢复高大地形的古高程是地质学家一直以来追求的目标，将自生矿物中氢氧同位素用作古高程计的历史不长，这种方法还有很大的应用潜力，可用到比新生代更古老的时期。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷