isotope的例句大全

Age dating of minerals and rocks by dilution metering of isotope ar

氩同位素稀释法测定矿物、岩石年龄

On the basis of isotope analysis it is pointed out that the ages of the shallow groundwater are quite young in general.

文章根据同位素分析结果，提出了浅层地下水年龄都较年轻的观点。

According to the characteristics of trace elements and isotope, the source of the basalt is similar to the OIB source.

微量元素和同位素特征显示，玄武岩起源于与洋岛玄武岩源区相似的富集地幔源。

The maintenance experinence of old MAT isotope mass spectrometer has been discussed.

本文讨论了MAT同位素质谱计后期维护中的一些问题.

The results show significant differences in oxygen isotope composition between biotite gneiss and granitic gneiss.

结果表明，这两种片麻岩在氧同位素组成上存在显著差别：黑云母片麻岩与共生的榴辉岩δ18O值呈同步变化，全岩δ18O值从－4.7‰变化至＋10.3‰；

The orthodox methods such as liquid nitrogen, isotope application, injection of sclerosing agent could result in scar, hypopigmentation and tissue necrosis.

但传统的治疗方法如冷冻、同位素及硬化剂注射等易继发局部疤痕形成，色素减退，局部组织坏死等，实际临床受限。

The major, trace element and isotope geochemical characteristics of the basic lavas of the Kule Lake ophiolite indicate that the basic lavas have a N-MORB affinity, possibly suggesting a small ocean basin environment for them.

本文通过对蛇绿岩基性熔岩的主量、微量和同位素地球化学研究，结果表明库勒湖蛇绿岩具N-MORB特征，推测其形成于小洋盆环境。

Ion optical system of a 255 ° double-focusing electromagnetic isotope separator at IAE

255°双聚焦电磁同位素分离器的离子光学系统

Some Questions about Precise Measurement of Isotope Abundance of Uranium

铀同位素丰度精确测量的若干问题

Nevertheless, the combined carbon content and isotope analyses of micro-carbonate in metamorphic rocks can be used to make a distinction in origin between sedimentary and igneous protoliths.

不过，变质岩中微量碳酸盐的碳含量和碳同位素比值分析能够对原岩类型提供有效的判别。

Pb Isotope Research of Porphyrite Fe Deposits in the Ning-Wu Area

宁芜地区玢岩铁矿Pb同位素研究

Experiment study of BRF 5 method an analysis method of oxygen isotope

氧同位素分析方法&BrF5法的实验研究

Sr/ Nd isotope analysis showed that the South Luo River loess has a relatively high87Sr/ 86Sr ratio and very low ε Nd ( 0) value, indicating that the studied loess has multiple sources.

Sr/Nd同位素分析表明，南洛河流域的黄土具有相对较高的87Sr/86Sr比值和非常低的εNd（0）值，表明其物质来源不同于黄土高原，而具有多源区的混合特征。

The phenocryst Ne and Ar isotope compositions are significantly different from MORB but similar to the atmosphere, suggesting their derivation from subducting slab.

玄武岩斑晶Ne和Ar同位素组成均明显不同于MORB而接近于大气值，这种大气Ne和Ar同位素组分应来自于俯冲板片。

The isotope analysis of minim lead in the gold dust has special meaning.

砂金中的微量铅同位素分析具有特殊的意义.

The characteristics and kinetic modeling of carbon isotope of methane in Jurassic humic gas in Kuqa depression in Tarim basin have been studied by combining pyrolysis experiment in closed gold tube system and analysis of methane isotope with GC-IRMS isotope mass spectrograph.

应用黄金管封闭体系热解实验，结合GC IRMS同位素质谱仪的甲烷碳同位素分析，研究了塔里木盆地库车坳陷侏罗系煤生成甲烷的碳同位素特征及其动力学模拟。

At present, the main ways to separate isotope are gas diffusion, gas centrifugation, chemical exchanging, etc. Because of their high energy consumption, low efficiency and high pollution, these ways are difficult to meet the demand of higher purity and special isotope.

目前广泛采用的同位素分离方法主要有气体扩散法、气体离心法、化学交换法等，由于这部分方法能耗高、分离效率低且环境污染严重已经难以满足对高纯度、特殊同位素的需求。

Compared with common amino acids , the isotope-labeled amino acids have accordant structure and analogical property.

同位素标记的氨基酸与普通氨基酸相比具有结构一致、性质基本相同的特点.

There are differences between natural and adulterated juices in stable isotope ratio.

天然果汁与掺假果汁之间在稳定同位素比率方面存在着差异.

Provides isotope data for almost all known nuclides . From Berkeley Laboratory.

为每个元素提供尽可能的同位素相关数据.