This thesis places its emphasis on"vital effect"of fossil brachiopods which has been attracting many attentions in studies of the isotope biogeochemistry.

2對目前腕足化石氧国产农村乱人伦精品视频、碳同位素研究領(lǐng)域中倍受關(guān)注的同位素生命效應(yīng)問題可在线观看网站91，本論文做了重點(diǎn)研究：在詳細(xì)的腕足化石保存程度研究基礎(chǔ)上精品欧美一区二区在线观看欧美熟，對原始生活環(huán)境相同www.久久@.Com、保存程度也相同的化石進(jìn)行了科狠狠色色欲、屬小黄片毛片在线、種三個(gè)級別上氧、碳同位素組成的對比与子的性关系视频，所研究的化石都沒有顯示出可檢測的同位素生命效應(yīng)国产吞精口爆一区二区。

And therefore it has the potential applications in green chemistry and chemical process,organic reactions areas.The literature review section of the thesis gave a brief introduction of the important applications in the green chemical process as well as the status of organic reactions research in NCW,and also summarized the applications in different kind of reactions such as hydrolysis,dehydration/hydration,alkylation,acylation, Diels-Alder reactions,rearrangements,condensations,hydrogen isotope exchange reaction,oxidation-reduction reaction,organometallic reactions.

論文的綜述部分簡要介紹了近臨界水在綠色化工過程中的重要應(yīng)用價(jià)值和國內(nèi)外在近臨界水中進(jìn)行有機(jī)化學(xué)反應(yīng)的研究現(xiàn)狀，以及以近臨界水作為反應(yīng)溶劑或催化劑在水解反應(yīng)国产S性爱视频、脫水/水合反應(yīng)无码毛片视频一区二区99、烷基化、跖访栏杀疲基化国产色欲电影在线观看视频、Diels-Alder反應(yīng)、重排反應(yīng)国产精品色哟网、縮合a级片a级片a片a级片、氫同位素交換反應(yīng)、氧化還原反應(yīng)国产91视频网站、有機(jī)金屬反應(yīng)等反應(yīng)類型中的應(yīng)用99熟妇。

Foliar carbon isotope composition δ~(13C, long-term water use efficiency, photosynthesis, and stomata of different Populus deltoids clones were studied under different water treatments.

該文測定并研究了不同水分處理下，不同黑楊無性系的長期水分利用效率、葉片δ~(13)C18岁黄色网站在线观看、光合作用www99Q12COm免费下载毛片网站、氣孔及其相互關(guān)系。

To find out the causes for tellurium enrichments in deep-sea sediments,the authors analyzed and compared tellurium concentrations and helium isotope compositions in the magnetic parts and those in the bulk samples of deep-sea sediments.

為了查明深海沉積物中碲異常的原因在线无码午夜福利高潮视频，筆者對比分析了深海沉積物中磁性部分與全巖的碲含量和氦同位素組成偷窥50个美女撒尿粉嫩。

Combined with the former studies and dating, it is believed that the area around the Tanggula Pass has experienced four major Pleistocene Glaciations, corresponding to marine isotope stage 2, 3, 4 and 6, respectively, and two Holocene glacial advances （the Neoglaciation and the Little Ice Age）.

在野外綜合考察的基礎(chǔ)上，對唐古拉山埡口地區(qū)末次冰期的冰磧漂礫進(jìn)行了宇生核素^10Be暴露年齡的測定国产主播第2页，得到（16.1 1.7）kaBP一区黄色在线免费观看、（31.9 3.4）kaBP、（41.4 4.3）kaBP和（66.8 4.3）kaBP4個(gè)測年數(shù)據(jù)日本中文字幕网站。

There are large variations in the concentration and isotope composition of bulk carbon for the A-type granites in eastern China.

中國東部A型花崗巖碳含量和同位素組成具有較大的變化范圍在线毛片.com，分別為500～5600ppm和-33.8～-16.4‰。

Re is moderately incompatible element, while Os is highly compatible. As they are highly siderophile, ReOs isotopic system can provide unique insight in dating and tracing research compared to other longlived radiogenic isotope systems (e.g. RbSr, SmNd, UThPb ) which involve lithophile elements partitioning into silicate rather than metal or sulfide.

Re為中等不相容元素日韩精品色综合一区二区三区，Os則屬強(qiáng)相容元素男生擦进女人下身全视频国产，與母子體均為不相容元素的RbSr、SmNd人人人人人人人人人人人干人人插、UThPb等同位素體系相比18禁福利免费网站无遮掩，具親鐵、親硫性的ReOs同位素體系在定年和示蹤研究中顯示出特殊性男人的天堂网免费网站，受到了地學(xué)家高度重視先锋影音最新AV看片资源，其應(yīng)用正走向普及。

It is considered that, just as those of pelagic sediments, the anomaloushelium isotope ratios of nodules can be attributed to micrometeorite interplanetary dust particles.

根據(jù)地外~3He的通量和結(jié)核黄色视频在线观看免费网、沉積物中地外~3He的含量計(jì)算了結(jié)核的生長速率和沉積物的沉積速率免费A片吃奶玩乳视频。

Isotope geochemistry of noble gases Expounded the relations of 3 He4He ratio and the classif ication of tecto nic regions in China, the composite storage of mantle helium, the controversy of mantle methane and the gas-source rock correlation.

稀有氣體同位素地球化學(xué)闡述了3He4He值與中國構(gòu)造分區(qū)，幔源氦的復(fù)合成藏和幔源甲烷問題以及氣源對比等3欧美,曰韩,国产馆在线视频。

With the high sensitivity and high resolution of the CO intracavity Laser Magnetic Resonance spectrometer, the high-resolution spectra of the rare isotope molecule ~(15)N~(16)O in natural abundance were successfully observed, which provided experimentai data for the analysis of the hyperfine structure of NO molecule.

通過對中紅外CO內(nèi)腔激光磁共振光譜儀的改造少妇极品欧美日韩视频在线观看，我們大大提高了該譜儀的探測靈敏度和分辨率，并成功用于探測NO稀有同位素分子~(15)N~(16)O的超高分辨光譜97人人操屄网站，為該分子的超精細(xì)結(jié)構(gòu)和Λ-雙分裂分析提供了實(shí)驗(yàn)依據(jù)99热在线只有精品99。