体元

In the study on the liquid structure of Ge-AlSb alloys, it was found that two types of clusters of compositions Ge and AlSb exist in the melt. Based on this result, a growth model of cluster elementary process for A-BC〓 type pseudobinary eutectic was presented.

在对Ge-AlSb系合金液态结构的研究中发现其熔体中存在组分为Ge和AlSb的两种原子集团，提出了A-BC〓型伪二元共晶生长的原子团基元过程模型。

The results showed that adding Sc to the alloy could cause the transformation of phase structure and the composition of the pre-separation phase in the transitional region of the quintary alloy.

6Al10Ti5五元锆基块体非晶态合金在非晶态-晶态过渡区中先析相的相结构及组织形态。

The model is composed of six primitive and six objects. The primitive elements are vertex, segment, triangle, secund quadrilateral, QTPV and DEM, respectively. And the objects are point, line, surface, volume, complex and spatial object, respectively.

模型包含顶点、线段、三角形、侧面四边形、似三棱柱体元和DEM 6个基本元素，同时包含点对象、线对象、面对象、体对象、复杂对象、空间对象等6个对象。

Based on the Miedema formation heat model for binary alloy and the Toop asymmetric geometrical model,the excess free energy,formation heat,excess entropy and the interactive coefficients of activity among all components of Si-Ca-Ba ternary alloy melts were calculated thermodynamically at

根据Miedema二元合金生成热模型和Toop非对称几何模型，对1 873 K时Si-Ca-Ba三元合金熔体过剩自由能、生成热、过剩熵以及各组元间的活度交互作用系数等热力学性质进行了计算。

Based on the Miedema formation heat model for binary alloy and the Toop asymmetric geometrical model, the excess free energy, formation heat, excess entropy and the interactive coefficients of activity among all components of Si-Ca-Ba ternary alloy melts were calculated thermodynamically at 1873K.

根据Miedema二元合金生成热模型和Toop非对称几何模型，对1873K时Si-Ca-Ba三元合金熔体过剩自由能、生成热、过剩熵以及各组元间的活度交互作用系数等热力学性质进行了计算。

R-4-Methyl-δ-valerolactone was transformed into-methyl 5-bromo-4-methylpentanoate (5) which is a stable and easily reserved reagent.

首次利用甾体皂甙元氧化降解废弃物-4-甲基－δ-戊内酯合成了松叶蜂性信息素(25，3S，7S)-3，7-二甲基－2-十五醇乙酸酯(2)和丙酸酯(3)。

The small dots encrusting the rough ER are ribosomes; compare their size with the particles of glycogen, shown as black, irregular clusters.

覆盖在促面内质网上的黑点为核糖体，与特殊颗粒肝糖元比较较小，密度相似，排列分散不规律。

The dissertation also establishes a special boundary element method for an anisotropic media to adapt to the permeability property of a fissured rockmass.

可靠指标β和失效概率P〓为适应裂隙岩体渗透特性的特点，本文建立了各向异性介质的边界元方法。

Some typical torsion problems of isotropic or anisotropic bar with different sections, involving a straight, kinked or curvilinear crack are calculated. The numerical results demonstrate the validity and applicability of the present boundary element method.

分别对含有圆弧裂纹，曲折裂纹及直线裂纹的各向同性材料和各向异性材料柱体的典型问题进行了数值计算，所得结果证明了本文边界元方法的正确性和有效性。

However, when the data source is updated, the aggregate values need to be recomputed even after one tuple is inserted or deleted.

然而，当数据源发生改变的时候，要对这样的数据方体进行维护是很困难的，即使只有一条元组发生了变化，所有的聚集值都必须重新计算，代价非常高。

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。