isotopic composition 中文意思是什麼

isotopic composition 解釋
同位素成分
  • isotopic : adj. 同位素的。 isotopic abundance ratio 同位素豐度比。 isotopic spin 同位旋。adv. -ally
  • composition : n 1 作文（法），作詩（法），作曲（法）；作品，文章；樂曲；文體，措辭。2 編制；結構，構造，組成，...
  1. It is important to avoid the use of uranium compounds of unspecified isotopic composition.

    要避免使用那種非專用的同位素成份的鈾化合物。
  2. Determination of the noble gas isotopic composition in rocks and minerals by mass spectrometry

    巖礦樣品中稀有氣體同位素組成的質譜分析
  3. Thermolysis production of lake carbonatite organic matter and its carbon isotopic composition characteristic

    湖相碳酸鹽巖有機質熱演化產物及其碳同位素組成特徵
  4. Carbon and oxygen isotopic composition ( 13c and 18o ) shows that the carbon not only derived from depth source but also sedimentary country rock

    碳、氧同位素（ 13c和18o ）組成表明，既有沉積圍巖中的碳，也有深部來源的碳，具有混合來源特徵。
  5. Using isotopic ( d, 18o 14c ) geochemical methods, this paper has studied the genetic relationship between the isotopic composition of meteoric water and that of underground hot water, analyzed the supply source of the kaifeng geothermal field and the generation of the geothermal water, and calculated its formation age

    摘要應用同位素（ d 、 18o 、 14c ）地球化學方法，研究大氣降水和地下熱水中同位素組成之間成因關系，分析開封地熱田中地熱水補給來源方向和地熱水的形成，計算其生成年齡。
  6. Standard test method for determination of plutonium isotopic composition by gamma - ray spectrometry

    用射線光譜法測定鈈同位素成分的標準試驗方法
  7. The comparison of stomatal parameters in leaf cuticles between two fossil angiosperms from the pliocene in west yunnan and their nearest living equivalent species indicates a little higher atmospheric co2 level at that time than the present, while carbon isotopic composition of fossil cuticles demonstrates much higher carbon isotopic discrimination and slight lower water use efficiency, showing a warmer and wetter climate than today

    摘要對滇西騰沖新近紀兩種被子植物葉片及其現存對應種的氣孔參數和碳同位素組成的綜合分析表明：當時的大氣co2濃度略高於現在水平；化石種的碳同位素分餾值高於現存對應種，但水分利用效率低於現存對應種；這證明當時的氣候條件比當前更為溫暖濕潤。
  8. Investigations by wolfgang m ller of the australian national university of the isotopic composition of the iceman ' s tooth enamel suggest that he had grown up in one area but spent the last several decades of his life in a different place

    澳洲國立大學的繆勒研究冰人牙齒琺瑯質的同位素組成，發現冰人可能在某個地區成長，但是他死前幾十年卻在其他地方度過。
  9. Determination of uranium and plutonium content and isotopic composition ; mass spectrometric method

    鈾.鈈及同位素成分的測定.質譜測定法
  10. Although samples were in a hot reflux for a long time at 85 in the experiment, and 5 ? molecular sieve of the adsorbed sample was acidized by hydrofluoric acid, the analytical method was tested to have little influence on carbon isotopic composition of the saturated hydrocarbons before and after complexation

    盡管實驗過程中樣品經過85長時間加熱迴流及吸附樣品的5 ?分子篩用氫氟酸酸化處理，但實驗結果經儀器檢測，證明該方法對正構烷烴碳同位素值影響因素不大。
  11. Instead, stardust investigator don brownlee of the university of washington in seattle and his colleagues found that the isotopic composition of nearly every grain that they analyzed matched that of the inner solar system, demonstrating that the rocky material in wild 2 indeed originated in the solar system

    與猜測相反，位於西雅圖的華盛頓大學的星塵研究員唐?布朗里和他的同事發現他們分析的幾乎每一粒星塵的同位素組成與內層太陽系的塵燼相同，這說明維爾德2上的巖石物質確實源自於太陽系。
  12. Method for the analysis of the organic matters for stable carbon isotopic composition

    有機質穩定碳同位素組成分析方法
  13. Organic geochemical measurements of geological samples - method for the analysis of the organic matters for stable carbon isotopic composition

    地質樣品有機地化測試有機質穩定碳同位素組成分析方法
  14. The research also shows that there is not any change in the stable carbon isotopic composition in all these river systems caused by the quake

    本研究同時顯示921地震並未對這些河川之穩定碳同位素組成造成影響。
  15. Standard test method for determination of uranium content and isotopic composition by isotope dilution mass spectrometry

    用同位素稀釋質譜法測定鈾含量和同位素成分的標準試驗方法
  16. The isotopic composition of lead often varies from one source of common copper ore to another ， with variations exceeding the measurement error ； and preliminary studies indicate virtually uniform is topic composition of the lead from a single copper - ore source

    鉛的同位素構成經常在一種普通銅礦石來源與另一種銅礦石來源之間存在差異，其差異程度超出測量誤差；而最初的研究表明，對于來自單獨一個銅礦石來源的鉛來說，其同位素構成幾乎是毫無二致的。
  17. Environmental isotopic composition of natural water in ordos cretaceous groundwater basin and its significance for hydrological cycle

    鄂爾多斯白堊系地下水盆地天然水體環境同位素組成及其水循環意義
  18. Hydrogen and oxygen isotopic composition of the fluid inclusion in quartz indicates that the water in ore - forming fluid was derived meanly from mixture water of meteoric and magmatic

    石英流體包裹體氫氧同位素組成表明，成礦流體中的水主要來源於大氣降水和巖漿水的混合。
  19. Therefore it should be planned carefully. the properties of snm ( nuclide mass, isotopic composition, distribution, matrix, etc. ) are significant to nda instrument response, these physical properties must be well known throughout the preparation procedure

    因此，制備nda核標準樣品必須非常仔細的計劃，特種核材料的特性（核素的質量、成分、分佈和基體）需要確切地知道。
  20. The complexity of ore - forming fluid isotopic composition in tianwan gold ore belt implies that the fluid was multi - source

    田灣金礦成礦帶中，成礦流體同位素組成的復雜性，反映了成礦流體是多源的。
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