isotope 中文意思是什麼
音標 ['aisəutəup]
isotope
解釋
n. 名詞 【化、物】同位素。-
Therefore, based on the isotopic chorology, petrochemistry, geochemisty and sr, nd, pb isotope, the ph. d dissertation mainly studied some yanshanian mafic dikes, volcanic rocks and alkalic - ultramafic dikes in shandong province
本論文主要從同位素年代學、巖石化學、地球化學和sr ? nd ? pb同位素方面對山東地區燕山期基性脈巖、火山巖和堿性超基性脈巖進行了系統研究。 -
Based on the avaliable isotope samples, we found that fon - lin alluvium, groundwater can be conceptually divided into three layers
此外由分析氫、氧同位素的組成，可定性地說明該區重要的水文循環特性。 -
Isotope geochemistry, nuclear astrophysics
核天文物理、地球科學 -
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2. 014
氘氫的一種同位素，在其原子核內有一個質子和一個中子，其原子重量為2 。 014 -
The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements
摘要近20年由於氣相同位素比值質譜儀的改良和氫、氧、碳、氮和硫等穩定同位素的廣泛研究，穩定同位素的研究技術已實質增加我們對于這些元素在自然生態系中生地化循環的了解。 -
From the study of hydrogen - oxygen isotope in enclosure liquid, some water conies from magma, others come from atmosphere precipitation
包裹體水的氫氧同位素研究表明成礦流體中既有巖漿水，又有大量大氣降水加入。 -
Today, most cyclotrons are used either for instructional purpose or for isotope production.
今天大多數回旋加速器是用在教學上，或者用於同位素生產。 -
The on - line isotope dew point measurer control scheme
應用數字證書實現基於角色的訪問控制 -
Benthic foraminifer fauna, ams14c dating and acoustic sub - bottom profile was analyzed in the core ey02 - 2 and ey02 - 1 drilled from the muddy deposit in the middle southern yellow sea and the mid - shelf of north east china sea. considering the results of core qc2 ? dz4 and the standard oxygen isotope curves, we discussed the late - quaterenary paleo - environment evolution, benthic foraminifer fauna, paleo - climate, the climate events and water mass in postglacial period, average sedimentation rates, paleo - water depth, origin of sediments, average sea level rise rate in the shelf of south yellow sea and east china sea. at last we discussed the condition of sea level rise in the east china, green house effect and the protection of coastal zone
本文根據南黃海中部泥質區和東海中陸架的兩個鉆孔巖芯的古生物、 ams ~ （ 14 ） c測年、淺地層剖面等，參考qc _ 2 、 dz _ 4成果及標準氧同位素曲線探討了黃東海陸架晚第四紀古環境演化、底棲動物群特徵、古氣候、冰後期以來氣候事件、古水團、沉積速率、古水深、沉積物源、海平面平均上升率，討論目前中國東部海平面上升的狀況、溫室效應及海岸帶保護。 -
The foretime testing method, down - passing the release unit for releasing " the tiny ball " and then taking out the unit for filling isotope has increased intension and fee of test
過去採用的先下井釋放「冷球」 、再取出釋放器裝入同位素進行二次下井的測試方法增加了測試強度和費用。 -
Boron isotope fractionation and its application in environmental study
硼同位素分餾及其在環境研究中的應用 -
The test of sulfur and lead isotope of ores shows that mineralizing matter mainly comes from deep. the ore minerals are typical low - to - moderate - temperature hydrothermal minerals, such as stylotypite, galenite and chalcopyrite
對礦石中硫和鉛進行同位素測定，認為硫主要來自深部，顯示了地幔硫遭受少量地殼物質混入后的硫同位素組成。 -
In terms of sulphur isotope result from sphalerite, galenite > pyrite and chalcopyrite, the 8 34s % o value obtained in fozichong orefield ranges mainly between 0 ~ + 5, which is coincident with the average 5 34s % o value of submarine stratabound sulphide deposits in silurian strate distributed over other areas of the world
地球化學研究顯示，佛子沖礦田硫同位素5倫值主要集中分佈在0 5之間，與世界其它地區志留系海相硫化物礦床的6噸陸值大體一致。 -
This indium isotope was created at the same time as the earth.
這種銦同位素與地球產生在同一時代。 -
Changes of nuclear mass and nuclear size cause isotope shifts.
原子核質量和大小的不同引起同位素移動。 -
The isotope ratio is directly used for comparing oils or gases.
同位素比率直接用於比較各種石油或天然氣。 -
Compared c13 & o18 isotope analysis curve with lake level curve, further analyzed palaeoenvironment
通過分析、對比碳氧同位素曲線與湖平面升降曲線，對古沉積環境的變化規律有了進一步的認識。 -
An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers.
使用同位素比值法有著一個明顯的局限因素，就是要用質譜儀進行分析。 -
Calibration specification for thermal ionization isotope mass spectrometers
熱電離同位素質譜計校準規范 -
From the study of sulfur isotope, i know that it is muti - mineralize feature, and mainly comes from magma sulfur
對硫同位素研究顯示出多期礦化特徵，但硫源則均以巖漿硫為主。
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