同位素

Microfossil assemblages and foraminifer isotopes from the upper part of ODP Hole 807A on the Ontong Java plateau were studied to provide evidence for discussing Late Quaternary productivity variations with glacial cycles in the western equatorial Pacific.

通过研究翁通－爪哇海台ODP 807A孔顶部岩心微体古生物和有孔虫同位素的变化，探讨冰期旋回中赤道西太平洋晚第四纪古生产力的变化。

This event happened abruptly and lasted a short time, benthic foraminifera cannot fitfor it and begin to extinct.

碳稳定同位素表现为三期负向偏移，并在界线处出现约4‰的负向偏移。

E , water depth 2 037 m, northern South China Sea, and microtektite , planktonic foraminifera and stable isotope analyses were performed in order to evaluate the effect of the mid-Pleistocene impact on microplanktonic communities and environment.

m层段的 2 8个沉积物样品进行了微玻陨石、浮游有孔虫及其同位素分析，以评估中更新世撞击事件对环境的影响。

High resolution Nd isotopic evolution can be acquired through studying foraminifera, fossil fish debris and FeMn oxides.

通过有孔虫壳体、鱼化石碎片和沉积物中FeMn氧化物组分可以进行高时间分辨率的古海水Nd同位素演化示踪。

The ratios of the different isotopes differ depending on where and how an element was formed, and are therefore an important clue to the conditions of the element's formation.

不同同位素的比例不同与元素在何时何地形成的有关，因此这是元素形成环境的重要线索。

Based on the study of the ages, mineral chemical, petrochemical and isotopic geochemical characteristics of granitic gneisses in Shuihou area of southern Dabie mountain, combining with the study of comparing these gneisses with the orthogneisses in northern Dabie mountain, it can be fould that there were clearly differentices between the granitic gneisses in southern Dabie and northern Dabie mountain.

论文通过对该造山带南大别水吼地区花岗片麻岩的时代、矿物化学、岩石化学及同位素地球化学特征的综合研究，并通过与北大别正片麻岩的对比研究，进一步证实南、北大别的花岗片麻岩套具有明显的差别。

With the development of determination fractionation of the stable chlorine isotope was verified, attracting many people's attention.

随着测定技术的不断发展，氯同位素的分馏效应逐渐得到证实，并引起了人们的广泛关注。

Fractionation effect of coalbed gas is a phenomenon that gas composition and isotope change during the process of migration.

煤层气的分馏效应是指运移过程中气体组份和同位素值发生变化的现象。

But the biogenic sulfur isotopic fractionation process was complicated by many factors.

但生物成因的硫同位素分馏过程复杂，受诸多因素的限制。

With the development of determination technique, the fractionation of the stable chlorine isotope was verified, attracting many people＇s attention.

随着测定技术的不断发展，氯同位素的分馏效应逐渐得到证实，并引起了人们的广泛关注。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。