Microfossil assemblages and foraminifer isotopes from the upper part of ODP Hole 807A on the Ontong Java plateau were studied to provide evidence for discussing Late Quaternary productivity variations with glacial cycles in the western equatorial Pacific.

通過研究翁通－爪哇海臺(tái)ODP 807A孔頂部巖心微體古生物和有孔蟲同位素的變化，探討冰期旋回中赤道西太平洋晚第四紀(jì)古生產(chǎn)力的變化。

The ratios of the different isotopes differ depending on where and how an element was formed, and are therefore an important clue to the conditions of the element's formation.

不同同位素的比例不同與元素在何時(shí)何地形成的有關(guān)，因此這是元素形成環(huán)境的重要線索。

This model indicates that the sulfur isotopes, whose values tend to be negative fractionate to a large scale because of the reductive process of dissimilating bacteria of sulfate.

根據(jù)內(nèi)蒙古烏達(dá)礦區(qū)高硫煤9煤層（有機(jī)硫同位素值 d 34 S=－12.3‰~5.8‰污污网站在线播放一区二区，黃鐵礦硫同位素值 d 34 S=－18.7‰~1.1‰）和低硫煤13煤層（有機(jī)硫同位素值 d 34 S 為8.9‰~ 11.5‰，黃鐵礦硫同位素值 d 34 S 為8.3‰~ 9.7‰）剖面上有機(jī)硫和黃鐵礦硫同位素的組成嘿咻欧美，結(jié)合煤巖學(xué)特征的綜合分析以及黃鐵礦化菌落和藍(lán)藻膠殼的發(fā)現(xiàn)久久精品亚洲区二区三区欧美福利，提出了高硫煤中硫的演化模式，認(rèn)為高硫煤中硫的同位素由于硫酸鹽的異化細(xì)菌還原作用導(dǎo)致硫同位素大規(guī)模分餾国产视免费性爱视频，使之趨于負(fù)值农村片人人操。

The research status of the stable isotopes in the field of environmental science and the isotope fractionation is revi.

本文介紹了穩(wěn)定同位素分析方法、穩(wěn)定同位素分餾的研究現(xiàn)狀及其在環(huán)境科學(xué)研究中的最新應(yīng)用進(jìn)展www黄片免费。

In this paper, much energy has been placed on phosphate concretion re search which host in black shales of Dou Shantuo Fm. and Nu Titang Fm亚洲色拍一区二区三区、 Research contents include mineralogy, petrology and geochemistry character istics of phosphate concretions. Element distributive characteristics are ana lysed using Synchrotron Radiation techniques. Additionally, sulfur isotopes of francolite and their significance are discussed in this paper. The results are as following

本文開展了晚震旦世陡山沱組以及早寒武世牛蹄塘組兩套黑色頁巖中磷結(jié)核的研究，對(duì)產(chǎn)于這兩套黑色頁巖中磷結(jié)核的礦物組成黄色强奸视频在线免费网站、地球化學(xué)等方面開展了研究免费人成在线观看网站视频，首次運(yùn)用了同步幅射X-熒光探針對(duì)結(jié)核內(nèi)元素的分析特征進(jìn)行了分析，同時(shí)還測定了磷的硫同位素并討論了其意義18岁禁看www，所得出的結(jié)果簡述如下

In the early 1950s American scientists produced the hydrogen bomb by inducing fusion reactions in a mixture of the hydrogen isotopes deuterium and tritium, forming a heavier helium nucleus.

1950年代爱爱大学网站免费观看，美國科學(xué)家在氫的同位素氘和氚的混合物中引導(dǎo)聚變反應(yīng)生成較重的氦原子核，從而制造出了氫彈人人艹人人操人人干。

In the early 1950s American scientist s produced the hydrogen bomb by inducing fusion reactions in a mixture of the hydrogen isotopes deuterium and tritium, forming a heavier helium nucleus.

1950年代性交真人运动免费黄色片子，美國科學(xué)家在氫的同位素氘和氚的混合物中引導(dǎo)聚變反應(yīng)生成較重的氦原子核，從而制造出了氫彈www巨乳人妻。

The research on micro-fauna and carbon, oxygen,strontium isotopes and magnetic susceptibility reveals that the signals of globalPaleocene/Eocene boundary event are well recorded in the Gamba region.

本文對(duì)剖面各個(gè)層位生物群欧美性爱A片免费看，界線附近的碳、氧中文无码亚洲色偷偷A片、鍶穩(wěn)定同位素以及磁化率進(jìn)行了研究国家一级A片一级毛片，研究成果顯示91情侣在线精品国产免费，全球界線事件在西藏南部崗巴地區(qū)具有明顯的影響欧美不卡一区。

In summary, the current project successfully designs a user-friendly program which is powerful in data analysis in 40Ar/39Ar geochronology and is potentially useful to data analyses of other isotopes in compositional space.

換言之国产免费看黄色网站，本研究的方法在解釋氬氬定年分析結(jié)果更加容易，因此在线观看a片免费网站，對(duì)於利用同位素分析中国美女网站、探討歷史復(fù)雜巖體的研究工作，提供一項(xiàng)有利的解析方法黄色网址在线进。

This time, it is carbon isotopes that give the game away.

這一次是碳同位素泄露了秘密www.樣。