isotopic composition

Additionally, in order to reduce systematic differences in realization of TPW among the national laboratories, it is very necessary to further investigate the effects of isotopic composition on the triple point temperature of water, and corrections for isotopic composition.

此外，为了减小国家实验室复现水三相点的系统差，需要进一步研究同位素组成对水三相点温度的影响以及同位素修正。

this paper introduces the significance of sulfur isotopic tracing in tree aspects. they are sulfur isotopes in coals, sulfur isotopic composition of surface water and sulfur isotopic tracing in plants, such as wheat and so on.

从煤的硫同位素组成、大气降水的硫同位素组成和小麦等植物的硫同位素组成等三方面来论述了酸雨来源的硫同位素示踪意义。

Sulfur isotopic composition of seafloor hydrothermal sediment from the Jade hydrothermal field in the central Okinawa Trough and its geological significance

冲绳海槽中部Jade热液活动区中海底热液沉积物的硫同位素组成及其地质意义

According to the variation model of Pb isotopic composition in crustal vertical section, the northern Dabie complex is beneath the southern Dabie ultrahigh-pressure metamorphic belt and the former is of the middle-lower crustal properties and the latter is of the upper crustal properties.

考虑到北部杂岩带在地壳结构上应位于南部超高压带之下，以及北大别正片麻岩具有中、下地壳性质而南大别花岗片麻岩则具有上地壳特征。

The influence of the monsoon climate on the isotopic composition of precipitation is discussed based on the accumulated data in China.

根据我国积累的雨水同位素组成资料，讨论了季风气候对雨水同位素组成的影响。

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.

石英流体包裹体氢氧同位素组成表明，成矿流体中的水主要来源于大气降水和岩浆水的混合。

It is important to avoid the use of uranium compounds of unspecified isotopic composition.

要避免使用那种非专用的同位素成份的铀化合物.

S-Pb isotopic composition shows that the ore-forming metallic materials were derived from surrounding porphyritic granite, and the H-O isotopic data indicates that the ore-forming fluids were mainly magmatic water mixed with small amounts of meteoric water at the late ore-forming stage.

硫和铅同位素显示成矿金属物质主要来自围岩，即斑状花岗岩；氢和氧同位素组成表明成矿流体来自花岗岩浆水。

This paper determined the sulfur isotopic composition of the Mianning REE deposit, Sichuan Province , China.

分析了四川冕宁大型稀土矿床硫同位素组成.

The slope(β) of linear regression between isotopic composition and SOC concentration was positively related to slope gradient of the landscape and negatively related to clay content, indicating that β could be used as a useful index to describe mineralization of SOC at the erosion position.

侵蚀部位土壤δ13C值与SOC含量线性拟合的倾斜角β与地形坡度成正相关，与粘粒含量成负相关，是反映SOC周转的一个良好指标。

Comparison between Palaeozoic and Cenozoic Lithospheric Mantle in the Eastern Part of the North China Block& With a Discussion of Mantle Evolution Nd ISOTOPIC COMPOSITION AND EVOLUTION OF THE UPPER MANTLE IN THE ARCHAEAN OF NORTH CHINA: CONSTRAINTS ON THE MANTLE HETEROGENEITY OF THE UNMETASOMATIC CONTINENTAL LITHOSPHERE

华北地台东部古生代与新生代岩石圈地幔特征及其演化华北太古代上地幔钕同位素组成、演化及对该区岩石圈地幔不均一性的制约

The authors collected systematic samples from the growth layers of Tridacna squasama in the Xisha Islands, determined Sr isotopic composition and obtained Sr isotopic growth curve of the mollusk.

对来自西沙群岛的双壳类鳞砗磲壳体沿着其生长纹取样并系统地作了锶同位素的分析，得出了该生物壳体的锶同位素生长变化曲线。

The influence of the monsoon climate on the isotopic composition of precipitation in China

论季风气候对我国雨水同位素组成的影响

Precise measurement of Sr isotopic composition of liquid and solid base using ( LP) MC ICPMS

（LP）MC-ICPMS方法精确测定液体和固体样品的Sr同位素组成

Environmental Isotopic Composition of Natural Water in Ordos Cretaceous Groundwater Basin and Its Significance for Hydrological Cycle

鄂尔多斯白垩系地下水盆地天然水体环境同位素组成及其水循环意义