| 单词 | isotope |
| 释义 | isotope [英 [?a?s?t??p] 美 [?a?s?to?p] ] isotope的意思、解释 复数形式：isotopes; isotope 基本解释 名词[化]同位素 isotope是什么意思 isotope 网络解释 1. isotope的解释 1. 同位素：科学家估计宇宙的年龄是介乎一百亿至一百六十亿之间;2001年科学家利用南欧洲天文台(EuropeanSouthernObservatory)的望远镜,观察一颗称CS31082-001的星球,量度星球上放射性(tive)同位素(isotope)铀-238(Uranium-238)的光谱(trum), 2. isotope什么意思 2. [化]同位素：erotogenic 性感应区的,动欲的,动情的,引起性欲的 | isotope [化]同位素 | teartape 撕条, 拉带 3. isotope什么意思 3. 同种位;同位素：isotonic 等渗的 | isotope 同种位;同位素 | isotropic 各向同性的 4. 同位元素：isomer-異性体 | isotope-同位元素 | Kelvin-絶対温度 isotope 双语例句 1. isotope在线翻译 1. Of or relating to an isotope with an atomic mass greater than the average mass of that element. 环境保护和治理：加强环境保护和综合整治力度，城市环境质量明显改善。 2. Keywords rare earth element; neutron activation analysis; enriched stable isotope tracer; subcellular fraction 稀土元素；中子活化分析；富集稳定同位素；亚细胞组分 3. isotope 3. Sum up all the above studies, some other conclusions are reached: the great part of kaolinites are formed before solidification (the oxygen, hydrogen isotope studies proved this tonstein is formed during a long term slow procedure of sedimentation and diagenesis; crystallization is the outcome of multi-peroid crystallization; the high temperature of diagenesis is between tens to about 150-160℃; organic diagenesis provided a suitable pH and Eh condition for tonstein. 最后得出结论：高岭岩中的高岭石在沉积-固结前已形成，氢、氧同位素的证据也证实了这一点；高岭岩是沉积和成岩改造这样一个缓慢过程中形成的，在成岩过程中纯化；结晶作用是多期次的；经历的成岩最高温度是几十到一百五、六十度；有机质的作用主要控制了有利于高岭岩形成的酸碱度和氧化还原电位。 4. Iran claims to have processed a small amount of uranium so that it can be used in a power reactor; they say they have enriched the fissile uranium-235 isotope of their material to 3.5%. 伊朗声称：它已加工了少量能在核反应堆中使用的铀。伊朗人表示：他们已把自己所用材料中的易裂变铀 235 同位素浓缩到了 3.5%。 5. isotope是什么意思 5. Regional mapping and isotope dating indicate that the upper and lower subgroups of the Huade Group are located in stratigraphically equivalent horizons rather than have an overlying and underlying contact relationships, and that the Bayan Obo Group in the Shangdu area is also a part of the Huade Group. 提要：区域填图研究表明，化德群上，下亚群并不是上下关系，而是层位相当的一套地层，而且商都一带的白云鄂博群也属化德群的一部分。 6. isotope的意思 6. Kinetics of oxygen isotope exchange between water and minerals of miarolitic alkaline granite from Nianzishan 氢同位素动力学同位素效应很大，α=kH/kD可达2～10左右。0℃时Al4C3与水反应α=3.9，30℃时Fe与H2SO4反应α=6.6。 7. The research status of the stable isotopes in the field of environmental science and the isotope fractionation is revi. 本文介绍了稳定同位素分析方法、稳定同位素分馏的研究现状及其在环境科学研究中的最新应用进展。 8. Based on the obtained biostratigraphical results, carbon isotope stratigraphy was carried out in Kalpin region. 在已取得的牙形石生物地层研究成果的基础之上，对柯坪地区的寒武-奥陶系界线进行了碳同位素地层学研究。 9. This approach underpins much of my research on energy and nutrient flux, and has involved both natural abundance and enriched isotope tracing techniques. 该方法巩固了对于我在能量和营养流的研究，并结合了自然丰度和浓缩同位素跟踪技法。 10. In this paper, formulas for relationship among oxygen mass spectra peak heights and for calculating oxygen isotope abundance are drived. 本文推导出氧质谱峰高之间的关系和计算氧同位素丰度的公式。 11. isotope的反义词 11. Thereby the accurate oxygen isotope abundance can be calculated by these formulas. 从而用这些公式可以计算得正确的氧同位素丰度值。 12. 12. The operating parameters to determine the isotope abundance ratio for 〓Pu/〓Pu by ICP-MS were optimized for the first time in China. 采用优化的仪器条件，测定了〓Pu／〓Pu的比值。将同位素稀释法应用于ICP-MS，测量了环境样品中Pu的含量。 13. The concentrations of some characteristic elements such as bromine, titanium and lead varied systematically with lead isotope abundance ratios. 分别采用HR-ICP-MS和TOF-ICP-MS测定铅同位素丰度比，结果表明ICP-MS的测定精度可适用于大气中铅的来源研究。 14. Nitrogen stable isotope; abundance; organic food; organic food authentication 氮稳定同位素；丰度；有机食品；有机食品鉴定 15. Two kinds of Li2CO3 materials with different isotope abundance were purified, respectively. The reference material of lithium isotope for laboratory and its spike were prepared. The homogeneity and stability of the reference material were tested. 分别对两种不同同位素丰度的Li2CO3原料进行纯化，制备了Li2CO3锂同位素实验室标准物质及其稀释剂，并对标准物质的均匀性和稳定性进行测试。 16. isotope什么意思 16. A radioactive isotope of chlorine. 碳的一种放射性同位素。 17. The environmental isotope have some advantages in tracing the movement.36Cl is chlorine's radioactive isotopes. 由于全球大气层核试验，产生了大量36Cl，形成了明显的核爆脉冲峰。 18. In this paper, the thermal simulation experiment to the source rock was done, the results of kinetics calculation of hydrocarbon generation and carbon isotope have shown that the gas of Suligemiao gas field in the Upper Paleozoic stratum in Ordos basin mainly belong to stage accumulation gas which come from around areas, the contributions to the gas field from high maturity southern area and Tianhuan depression are 49% and 22% respectively, and the accumulation gas come from Suligemiao area is only make up of 29%. 本文利用热模拟实验，通过生烃动力学和碳同位素动力学计算，表明鄂尔多斯盆地上古生界苏里格气田气体的主要是他源阶段累积气，来源于气田南部高成熟区域、西部的天环坳凹陷气体的贡献比例分别为49%、22%，气田区域的源岩累积气体占29%。 19. Using GC/C/MS on-line carbon isotope analysis technique, we obtained the stable carbon isotope ratios of n-alkanes, iso-alkanes from the light hydrocarbon compositions and pristane, phytane in crude oils in Tarim basin. 本文利用新兴的原油单体烃类在线同位素分析技术测定了塔里木盆地原油及凝析油的正构烷烃、轻烃部分的异构烷烃和植烷、姥鲛烷的稳定碳同位素值。 20. On the basis of isotope Sr variation, integrated with lithologic association, authigenic mineral assemblage, sedimentary structure and paleontologic evidence, the Shenglihe oil shale is classified into two major sedimentary environments such as tidal flat one and lagoon one. 依据Sr同位素的变化特征，并结合例面的岩性组合特征、自生矿物组合、沉积构造以及古生物标志，将胜利河油页岩划分为潮坪和澙湖两种沉积环境。 isotope 词典解释 1. 同位素 Isotopes are atoms that have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties. e.g. ...tritium, a radioactive isotope of hydrogen. 氢的放射性同位素氚 isotope 单语例句isotope的翻译 1. Radiocarbon dating depends on measuring the radioactive isotope of carbon known as carbon 14, which is ingested during a lifetime and steadily decays after death. 2. The NFL said it would also introduce the additional use of carbon isotope ratio testing on a random basis to detect low doses of testosterone. 3. He died an agonizing death in London after ingesting a lethal dose of the radioactive isotope polonium 210. 4. In the experiments, researchers fired a rare isotope of calcium at a target made from americium. 5. Litvinenko died in London in November from poisoning by a rare radioactive isotope. 6. Centrifuges spin compounds of uranium at supersonic speed to separate out and concentrate the most radioactive isotope of the element. 7. This study is the first in which a single sample of FAN yielded consistent ages from multiple isotope dating techniques. 8. Previously, carbon isotope testing was only used to confirm positive tests for testosterone. 9. The radioactive isotope was also found on lettuce in Jiangsu and Indian lettuce in Guangdong. 10. The technique is also being used to refine current radio carbon dating processes, which use the carbon 14 isotope to measure the age of an archaeological sample. isotope 英英释义 noun 1. one of two or more atoms with the same atomic number but with different numbers of neutrons |
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