同位素

Boron has two stable isotopes 10B and 11B,which have relative abundances of 19.90 % and 80.10 %,respectively.

硼具有两种稳定同位素10B和11B，其在自然界的丰度分别是19.90%和80.10%。

The 40Ar/39Ar isotopic dating of amphiboles collected from different depths of core samples in No. 3 intrusion gave a (228.2±3.0) Ma plateau age and a (230.1±7.1) Ma isochron age.

本次工作对采自不同深度岩心样品中的单矿物角闪石进行40Ar/39Ar同位素年代学研究，得到(228.2±3.0)Ma的坪年龄和(230.1±7.1)Ma的等时线年龄。

Both Na++K+ and Cl-+Si account for 5%~10% of the cations and anions, respectively.

这些河流的化学和同位素组成主要受其自流盆地的地质特征控制。

The chemical and isotopic arrays formed by basalts indicate mixing of components from two distinct source regions.

玄武岩所形成的化学和同位素阵列表明，它们是由来源于2个不同源区的组分混合产生的。

The Cenozoic basalts in mainland of eastern China are the products of multiple extrusion.

本文以中国东部6个地区的新生代大陆玄武岩及其幔源包体为研究对象，测试和搜集了玄武岩的常量元素、微量元素和单斜辉石斑晶的化学成分及Sr、Nd同位素资料以及幔源包体的常量元素、微量元素和矿物化学成分。

REE abundances and Sr and Nd isotopic composition in mantle xenoliths from basalts in Hannuoba are reported in this paper.

本文报道汉诺坝玄武岩中地幔岩捕掳体的REE丰度和Sr、Nd同位素组成。

In this review,both the optical characteristics of QD and the preparation methods are summarized,with an emphasis on its biological application as fluorescence la- bels.

但众所周知，同位素和有机染料存在一系列的缺陷，从而限制了其在生物活体内的应用。

Based on the other researh achievements and the drilling of new boreholes, the knowledge of stratum and identify aquifers of the shallow part of the Yellow River delta is obtained.

结合前人的研究成果和施工的钻孔资料，基本查明了黄河三角洲浅层地下水的分布和埋藏条件，分析了该区地下水和黄河水的氢氧同位素组分（18O、D和T）。

In this study,24 boreholes are constructed in the Bao'an district of Shenzhen City as the study area and 24 groundwater samples are collected from these boreholes.

以深圳市宝安区为典型研究区，开展了钻孔施工及地下水样采集工作，并测试了水样的微量元素含量和稳定氢氧同位素组成。

Estimation of trophic position indicated that upland buzzards stand at trophic position 4 23, far from that of small mammals, i.e., upland buzzards scarcely captured small mammals as food at the duration of food shortage.

通过稳定性同位素营养级模型的运算发现，大处在 4 2 3左右的营养级；雀形目鸟类处在 2 4到 3 39左右的营养级，而小型哺乳类则处在 1 4 5到 1 82左右的营养级。

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。