体密度

Firstly, we studied the effects of synthetic temperatures on AgSbPb18Te20 samples in specific pressure. The XRD results indicate that AgSbPb18Te20 can be synthesized at more than and equal to 1120℃ and synthesized AgSbPb18Te20 samples are belong to cubic system.

结合指标化程序给出的晶格参数和我们实验测定的密度，我们认为我们所合成的样品是固溶体，然后又对样品三的原始XRD谱，利用Material Studio中的Reflex模块中的Reflex Solve对其进行了结构求解，得到其最好的结构为符合空间群为FM-3M的结构（如图4.9）。

A three- dimensional turbulence model in non-orthogonal curvilinear coordinates is proposed to investigate the impacts of vegetation on channel morphology. The model includes vegetation-induced drag force and vegetation density in the control equations to describe the effects of vegetation on flow structure, and solves sediment continuity equation to compute channel geometry.

本文建立曲线坐标系下的三维湍流模型研究水生植物对河道形态的影响，在水流控制方程中加入植物阻力项和植物密度项来描述水生植物对水动力特性的贡献，通过泥沙质量守恒方程求解河道变形，在适体网格中求解模型的控制方程。

After the study of inclusion, we found that fluid was low salinity, low denseness and low temperature.

包裹体研究表明，含矿流体为低盐度，低密度流体，成矿温度较低。

The results indicate that there are high density dislocations in the matrix of the composite and the grain of the matrix is finer compared with that of the 6061Al.

结果表明，压铸法制备的Al18B4O33/6061Al复合材料中存在高密度的位错，同时复合材料基体晶粒细小。

Consisting of the high strength-low density fibers and matrix, the fibrous composite has many excellent properties or special characteristics, for example, high specific strength and high specific modulus, anisotropic and designable. In recent years, it has been widely used in the structures of aircraft, space, marine and automobile, etc.

纤维增强复合材料是由高强度、低密度的纤维材料与基体组成，具有很多其它材料和结构不具有的优点或特点，如比强度和比模量很高，具有强烈的各向异性和可设计性等，广泛应用于航空、航天、造船和汽车等领域。

Negative coefficients occur where there is a downward decrease in velocity and density: for example, at the top of an over pressured shale diapir

只有当速度和密度向下减少时，例如在超压页岩穿刺体的顶部，反射系数才会出现负值。

In the normal group, electron microscopy showed normal chondrocytes were oval, and cells and cell membrane were intact. In cytoplasm, there were abundant rough endoplasmic reticulum, dictyosome, and mitochondria with intact nucleus, and even chromatin. In the model group, chondrocytes exhibited obvious pyknosis and their shape was irregular. The areolae around cells disappeared; cell organs in cytoplasm coagulated to flaps which showed electron dense and was uneasy to observe; the shape of nucleus showed irregularity, and caryotin gathered densely.

电镜下正常对照组软骨细胞呈椭圆形，细胞及胞膜完整，包质内可见丰富的粗面内质网、高尔基体、线粒体，细胞核完整，染色质分布均匀；模型对照组软骨细胞明显固缩且外形不规则，细胞周晕消失，胞浆内细胞器凝成高电子密度的片状物不易分辨，细胞核不规则，染色质浓聚，散裂于核中。

Compared with diploidy seedlings of P.elongate,leaf length and stomata size of tetraploid becomes bigger,the leaf length/width ratio and stomata density becomes smaller.

变异植株叶片比二倍体大，叶片长宽比变小，叶片单个气孔变大，气孔密度变小。

Have had the intense function fromthis the explanation preparation and DNA, matched the body the planearyl residue groups and bases to insert the DNA double spiral plane,caused the plane aryl residue groups and bases the electronic clouddensity to have the change.

由此说明配合物和DNA发生了强烈作用，配体的平面芳基基团插入了DNA的双螺旋平面，导致平面芳基基团的电子云密度发生改变。

By means of polymerase chain reactionand DNA recombinant techniques,the gene encoding mature ouse IL-4 was obtained from plasmid pCD-mIL4 and was inserted into expressionvector pBV220,which contains _RP_L double promoters,synthesized SD sequence and temperaturesensitive CIts857 gene,thus an expression lone eferred as pBV-mIL4 was constructed.

该质粒含有 P_RP_L 串联启动子，合成 SD 序列和温度敏感的CIts857基因，并且去除了完整小鼠 IL—4 cDNA 中3′侧翼非编码区，以原核系统高频使用的强终止密码子TAA 代替了原小鼠 IL-4基因的终止密码子 TAG，经 SDS-PAGE 及凝胶密度扫描分析，表达的重组小鼠 IL-4分子量约为14.2KDa，占总菌体蛋白量的25～30%。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐