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This thesis contributes to geometry compression in the following aspects: Proposes a method of progressive spherical mesh parameterization based on local parameterization by directly projecting the deleted vertices to its neighborhood. Based on spherical mesh paramterization, an adaptive subdivision remeshing method by progressivly redistributing of sampling points is proposed, by this means, the main geometry information of the original mesh can be captured with only a small amount of samples, it can also be used in mesh simplification. By regarding attributes binded on mesh vertices as geometry signals and transferring them onto a uint sphere by means of spherical mesh parameterization, meshes with different attributes are compressed with spherical wavelet successfully with high compression rate. As a kind of lossy geometry compression technique, two mesh simplification algorthimes are also presented in this thesis.

归纳起来，本文的主要贡献有：提出了以直接投影局部参数化方法为基础的网格累进球面参数化方法；在网格球面参数化方法的基础之上，提出了一种基于累进优化布点方案的网格细分采样方法，该方法可以用很少的采样点就可以捕获到网格的主要特征，因此我们也将其用于后面的网格简化工作当中；通过将网格顶点上定义的各种属性看成几何信号，并以网格球面参数化为手段将几何信号迁移到单位球面上，从而成功地实现了用球面小波对各种几何信号的压缩；作为一种有损压缩方法，本文还提出了基于统一距离的网格简化算法和基于重采样的网格简化算法。

Then the normal color for a week, during which Chinese medicine has been Baotai drink, the next day, playing a total of 3000ml of HCG needle 5. At 2:00 on August 17 there is a small amount of blood, August 17 to go to the hospital to check, and make a B-, has original heart tube Pollex Mobile, fetal survival, see embryo length within 36mm, intrauterine 20mm liquid separation of the dark District.

接着一个星期颜色正常、期间一直喝中药保胎，隔天打3000ml的HCG总共5 针。8月17日凌晨2点又出现少量鲜血，8月17日去医院检查，又做了B超，有原始心管博动，胎儿存活、内见胚胎长36mm，宫腔内分离20mm液性暗区。

Motion is a strike trigger in most cases, so any food added should ideally me moving around by way of a small amount of circulation, via a bait line dangled temptingly under its nose, or on the end of a set of feeding tongs.

食物的运动通常能刺激它们的食欲，所以我加死食时都会用些水流吹动。用钓鱼线挂着，在它们的鼻子前晃动，或绑在喂食夹子上。

Eczema is sometimes dry type, that is a small amount of small white papules on the belt desquamative bran.

湿疹有时为干燥型，即在小丘疹上有少量灰白色糠皮带脱屑。

Typically, a heat pipe consists of a sealed container, a wicking structure and a small amount of working fluid under its own pressure.

通常情况下，热管由一个密封容器，一个毛细结构和少量的工作流体根据自己的压力。

The preparation method is characterized in that:(1) at minus 10 DEG C to 10 DEG C, a chloroauric acid solution with a certain concentration is added into a nano-Pt/C catalyst by ultrasonic or stirring mixture and the atomic ratio of Pt to Au is controlled between 18:1 and 5:1;(2) a small amount of monohydric alcohol or dihydric alcohol or trihydric alcohol of C1-C3 is added and is stirred at minus 10 DEG C to 10 DEG C for 10 min to 5h, so as to prepare the carbon-loading Pt-Au bimetallic nano electro-catalyst;(3) if necessary, the catalyst obtained by the step (2) is treated for 0.5 to 4h at high temperature ranging from 100 DEG C to 700 DEG C in the inert or reducing atmosphere, so as to adjust and control the grain size of the Pt-Au bimetallic nano electro-catalyst.

本发明涉及了一种高稳定性碳载Pt-Au双金属纳米电催化剂的制备方法，其特征在于：(1)在-10～10℃中，将一定浓度氯金酸溶液加入到纳米Pt/C催化剂中经超声或搅拌混合，控制Pt∶Au的原子比为18∶1-5∶1；(2)添加少量C 1 -C 3 的一元、二元或三元醇类，在-10～10℃下搅拌10min-5h，制备了碳载铂金双金属纳米电催化剂；(3)视需要，可将步骤(2)得到的催化剂在惰性气氛或还原气氛中经100～700℃高温处理0.5-4h，可调控Pt-Au/C双金属纳米催化剂的粒径。

The chemical structure of the product was characterized by means of the melting point and IR. The results show that tetraethylammonium bromide which was used as a phase transfer catalyst in this reaction had optimization effect on the interfacial diffusive reaction of BTC and PNP. Higher concentration of sodium hydroxide, lower temperature and a higher dosage of BTC produced a small amount of 4-nitrophenyl chloroformate, while lower concentration of sodium hydroxide and a lower dosage of BTC made reaction incomplete, which affected the yield.

结果表明，在碳酸二（4-硝基苯基）酯合成中使用的相转移催化剂四乙基溴化铵对受界面扩散控制的BTC气与对硝基酚钠反应有良好的相转移催化效果；氢氧化钠质量分数较低时，酚钠盐向溶有BTC的油相扩散速度较小，较高时会产生氯甲酸对硝基苯酯；温度较低、BTC量较高时，会产生少量氯甲酸对硝基苯酯，BTC用量较低会使反应不完全，这些都影响着收率。

The shorter-chain fatty acids have strong, unpleasant odors; for a couple of days after I ate a small amount of a medium-chain triglyceride mixture, my skin oil emitted a rank, goaty smell.

短链不饱和脂肪酸有强烈的，不愉快的气味；一两天后，我吃一个小数目，一个中等链甘油三酯的混合物，我的皮肤油排放的职级， goaty臭味。

Painted mostly in black, use either brown-red; decoration in order to change patterns of plant leaf tissue the main triangle dots are curved, half-moon, geometric shape such as decoration, while the pattern is often curved triangular structure 22 opposite or contrary to , side-side, middle, or draw a straight line or without pattern, with a few arc composed of upper and lower triangular or half moon or the top of the left commensurate with quite a few patterns, followed by a small amount of a pattern of squares, bands and so on.

彩绘以黑色居多，兼用棕红色；纹饰以植物叶纹变体组织为主，有弧形三角圆点、半月形、几何形等纹饰，而图案的结构往往是弧形三角两两相向或相背，侧旁、中间或绘直线或无纹，以几个弧形三角或半月形组成的上下左右相称或对顶的纹样也不少，其次还有少量的方格纹、带纹等。

A small amount of food: all meat, caviar, crayfish, small eels, large oysters, shellfish, Quan Zhinai and ice cream, cabbage, eggplant, pepper, potatoes, olives, pepper, banana, coconut, mango, orange, vegetable oil .

少量食用：所有肉类，鱼子酱、小龙虾、小鳗鱼、大牡蛎、贝壳类等，全脂奶和冰淇淋，洋白菜、茄子、辣椒、土豆、橄榄、胡椒、香蕉、椰子、芒果、橘子，菜油。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。