四体

A rounded convex molding, often a quarter section of a circle or a n ellipse.

凸圆线脚装饰一个圆的凸圆体塑模，通常为一圆或椭圆的四分之一部分

A rounded convex molding, often a quarter section of a circle or an ellipse.

凸圆线脚装饰一个圆的凸圆体塑模，通常为一圆或椭圆的四分之一部分

Quaternion field; matrix equation; structure-preserving algorithm; iterative method

四元数体；矩阵方程；保结构运算；迭代算法

The missing fourth element that would make the triad a quaternity is, in a man, the archetype of the Wise Old Man, which I have not discussed here, and in a woman the Chthonic Mother.

而缺失的第四元素将使三联体成为四位一体，在男人身上，是智慧老人原型，我将不在这里讨论它，在女人身上则是冥界之母。

Adjacency" is the basic property of thing, which is a gathering quaternity of the heaven, earth, god and man. It is this "gathering" that makes "adjacency and its performance possible.

邻近"是物的基本特性，物之物性乃是天地人神四重体的会聚，正是这种"会聚"使"邻近"成为可能，使"邻近运作起来。

In the first one , Our experiment team use ethanol liquor as solvent and achieve the process of racemization of dextrorotatory imidazole in sodium hydroxide environment.

四咪唑的原料成本要比左旋咪唑低50%，其临床驱虫效果也要比左旋咪唑小50%。左旋咪唑的疗效是消旋体的两倍，毒性低一半。

At the lower generation (C5) of the autotetraploid eggplant, plant shape index and the ratio of the well-balanced plants (9.19%) are low. The average shape index for 12 strains of the three different female parents is 0.4779. But its genetic rate is: h^2=96.39%±3.52%. Plant shape index shows strong minus correlation with average fruiting ability, it's relique interrelated coefficient is: r=-0.9989 and correlative heritability is: h=-95.22%.

同源四倍体茄子育种选择的较底世代（C5代）株形和结果正常的植株比例很低(9.19%)，3个不同母本系的12个株系株形指数平均为0.4779，株形指数的广义遗传率h^2=96.39%±3.52%，株形指数与植株平均结果数呈极强的负相关性，遗传相关系数r=-0.9989，相关遗传力h=-95.22%。

The total synthese three natural compounds to explore enantioselective synthesis of flavanol: We use phloroglucin and 2, 4, 6-trihydroxyacetophone as starting materials to synthesis distenin in two ways; Resorcin was used to synthsis 2, 5-dimethoxymethoxyacetophone though 3 steps.

对黄烷醇化合物的立体选择性全合成进行了探索：以间苯三酚和2，4，6-三羟基苯乙酮为原料，尝试用两条路线对Distenin化合物进行了全合成研究；以对苯二酚为原料，经三步制得2，5-二甲氧甲氧基苯乙酮，与2，4，6-三甲氧甲氧基苯甲醛反应，经四步反应得到天然产物3，5，7，2′，5′-二五羟基黄烷关键中间体1-（2′，6′-二甲氧甲氧基苯）-3-（2"，4"，6-三甲氧甲氧基苯）丙烷-1R，2R-二醇83及其对映体84；简要介绍了EGCg类化合物的生物活性和研究概况。

NBR/modified montmorillonite and NR/HMMT nanocomposites were prepared by the mixing intercalation method with the monomers resorcin and hexamethylenetetramine complex . XRD and TEM showed that the interlayer spacing of HMMT had got much larger with RH addition and the layers of HMMT had dispersed in rubber matrix on nanometers. FTIR and crosslinking density results explained that chemical reaction had occurred between RH and rubber in the course of vulcanization, which improved the crosslinking density of rubber and enhanced the interaction between the rubber and HMMT.

采用单体混炼插层法，引入间苯二酚-六次甲基四胺的络合物，制备了橡胶／改性蒙脱土插层纳米复合材料。X-射线衍射分析表明：RH的加入使蒙脱土层间距不断扩大；TEM观察到无机片层在橡胶基体中纳米级分散；FTIR和交联密度的分析发现，在硫化过程中RH与橡胶发生化学键合反应，同时与改性蒙脱土相互作用，使得体系交联密度提高。

The author of FSLJ employs simple and natural words, colloquial words and modal particles at lexical level, four-character structures and run-on sentences at syntactic level, and a novel petal-structure at textual level, to express the whole gamut of emotions from happiness to sorrow.

在《浮生六记》的写作过程中，作者在词汇层面上运用简单词、方言和文言虚词，句法层面上借助四字格和流水句，篇章层面上独创了花瓣状结构成功表达了平淡无奇却情真意切的娓语体风格。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。