查询词典 isotope

To study the changing law of stable carbon isotope composition in cattle tail hair with the change of feeds composition, and to verify each section of cattle tail hair can't exchange with other sections once it is produced, and it contains isotopic information which can reflectthe cattle feeds information from the time when it is produced.

研究牛尾毛中稳定性碳同位素组成随饲料改变的变化规律，确证牛尾毛一旦长成，其中的稳定性碳同位素不再与其它部分的进行交换，每段毛发记录的同位素信息可反映毛发生长时的饲料信息。

To study the changing law of stable carbon isotope composition in cattle tail hair with the change of feeds composition, and to verify each section of cattle tail hair can't exchange with other sections once it is produced, and it contains isotopic information which can reflect the cattle feeds information from the time when it is produced.

研究牛尾毛中稳定性碳同位素组成随饲料改变的变化规律，确证牛尾毛一旦长成，其中的稳定性碳同位素不再与其它部分的进行交换，每段毛发记录的同位素信息可反映毛发生长时的饲料信息。

People through nuclear reactions, have been synthesized 17 kinds of atomic number greater than 92 of the transuranic elements, and thousands of The new kinds of radioactive nuclides, and by high-energy and ultra-high energy-ray beam and the interaction of atomic nuclei and found hundreds of kinds of short-lived particles, namely, baryon, meson, lepton, and particle resonance states of these particles has led to a new field of study - the birth of particle physics since the age of .70, nuclear physics has entered a deep development and wide application of new, more mature stage, on the one hand the development of particle acceleration and detection techniques, expanding people's research in nuclear means, the other hand, nuclear technology to serve the national economy, for example, for the development and utilization of nuclear energy to provide more accurate nuclear data; the use of isotope tracer technique diagnosis and treatment of disease; the use of radiation and irradiation preservation of food, irradiation breeding .

人们通过核反应，已经人工合成了17种原子序数大于92的超铀元素和上千种新的放射性核素，并且通过高能和超高能射线束和原子核的相互作用，发现了上百种短寿命粒子、即重子、介子、轻子和共振态粒子，对这些粒子的研究导致了一门新学科——粒子物理学的诞生。70年代以来，核物理进入了纵深发展和广泛应用的新的更成熟的阶段，一方面发展粒子的加速技术和探测技术，扩充人们研究原子核的手段，另一方面将核技术服务于国民经济中，例如，为核能的开发利用提供更为准确的核数据；利用同位素示踪技术诊断和治疗疾病；利用射线及辐照技术保存食品、辐照育种等。

A uranium isotope with mass number 235; capable of sustaining chain reactions.

铀的同位素，原子质量数为，能进行持续的连锁反应。

In order to improve the ablation precision,efficiency and the automation of Laser Ablation System in Mass Spectrograph,the intelligentization of laser ablation system was studied in MS by taking inert gas isotope-MS as an experimental subject.

为了提高质谱仪熔样系统的熔样精度、效率和自动化程度，以惰性气体同位素质谱仪为实验对象，对熔样系统的智能化进行研究。

Presently, the main contents for microchemistry study in cephalopod statolith are composed of inorganic and organic molecules, minor and trace elements, isotope as well as microchemical markers. Minor and trace elements were the important part among the application, which played an important role in discriminating different populations, analyzing life history and reconstructing inhabited environment condition.

目前头足类耳石微化学的研究内容主要包括无机和有机大分子、微量元素、同位素、微化学标记等方面，其中微量元素是应用研究的重点，在头足类种群识别、生活史分析及栖息环境重建等方面发挥了重要作用。

The developments in stable isotope technique enable us to study microelement metabolism and bioavailability in human being.

本研究采用面粉作为载体，因为面粉在我国的绝大多数地区都是日常的主食，所以接受性问题不大。

The content of element Re from the molybdenite and S isotope composition from the pyrites show that the oreforming materials may come from mixed crustal and mantle sources.

根据辉钼矿中的铼含量及矿床硫同位素特征表明，矿床的成矿物质来源为壳幔混源。矿床的形成可能与谷太平洋板块的俯冲有关，构造作用与岩浆作用的耦合是成矿的关键因素。

According to the relationship of Yanshan epoch granites and NE ductile shear zones of main structure of this region, and regional isotope chronology data, the granitoids of this region are divided:(1) pretectonic, qnartze monzonite -granites assemblage, representative plutons: Shigujian, Erwan, Egongbao, and Yunfengding;(2) syntectonic granite assemblage, representative plutons: Tiantangzhai, and Jiuzihe;(3) posttectonic granite assemblage, representative plutons: Daguping and Bijiashan. These assemblages differ from precollision , syncollision and postcollision intrusive assemblages.

根据燕山期花岗岩与区内主体构造NE向韧性剪切带的关系，并结合区域同位素年代学资料，将区内花岗岩分为：(1)构造前石英二长岩—花岗岩组合，代表性岩体有石鼓尖、二湾、鹅公包、云峰顶；(2)同构造花岗岩组合，代表性岩体有天堂寨、九资河；(3)构造后花岗岩组合，代表性岩体有大孤坪、笔架山，这里的构造前、同构造和构造后侵入岩组合不同于碰撞前、同碰撞和碰撞后侵入岩组合。

The δ〓S value of pyrite, sphelerite and arsonopyrite is in the range of 4. 0‰ and -4. 2‰ with the highest frequency occurring around zero, indicating a uniformed sulfur source. The large variation and mainly negative values (0.2‰～-11. 3‰) of δ〓S for stibnite could be interpreted by isotope fractionation. The carbon isotopic characteristics exhibit a mixing nature of magmatic carbon and organic carbon.

矿床中的热液成因黄铁矿、闪锌矿和毒砂的δ〓S＝4.0‰—-4.2‰，呈塔式分布，δ〓S集中在0附近，表明其成矿体系具有均—化硫的同位素组成，而辉锑矿的δ〓S变化范围较大(0.2‰—-11.3‰)，除一个样品外均为负值，这是硫同位素分馏作用的结果。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。