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The characters of powder are connected with the inside structure and synthesize-technics of materials. In this paper, we want to search a optimize technics of materials synthesizing, and prepare a kind of nanosize powder which shape like ball and have good dispersed character. At the same time, we want to obtain a bridge structure of Zn-O-Tb through dopping of Tb, which can achieve efficient energy transfer from ZnO hosts to excited states of dopants, The doped powder can eradiate blazing green light because of efficient emission buildup from dopants and ZnO hosts, and the powder can emission a pure light. And we want to research the structure in doped ZnO for the further research of low-tension fluorescence of ZnO.

粉体的这些特性无不与其内部结构特征和制备工艺有关，基于这些，本文的实验目的是希望能寻找一种合适的制备方法和优化工艺，制备分散性好的球形纳米颗粒，希望改善其表面形貌，同时，通过铽掺杂，希望得到一种Zn-O-Tb桥联结构，实现氧化锌基体向铽发光中心的能量传递，希望铽中心特征发射和氧化锌绿光发射能有效叠加增强，改善粉体的单色性，制备出好的复合粉体，分析清楚其结构，从而为后续低压荧光特性研究作准备。

Erodent properties : ACQ-DB preservative and its treated materials may cause erosion to some materials, Such as copper, aluminum and zinc-copper alloy etc.

腐蚀性： ACQ-DB 及 ACQ-DB 处理材对铜、铝、锌-铝合金等材料有一定的腐蚀作用，所以避免与上述材料直接接触。

Situation of the utilization of experiment resources:(1) The opening up of the laboratory are relatively weak aspect, so, in these schools, students have few chances to do extra-curricular experiments;(2)Almost all of schools teaching experiment instruments are used, less instrument is not used, the main reason for not used is that these experiment instruments are irrelevant with materials or they are obsolete and damaged;(3) Teachers always experimentalize according to the teaching materials step-by-step, there is no improvement;(4) Most teachers don\'t pay attention to the evaluation of experiment result, students merely write expriment report;(5) The teachers have realized some significance of inquiry experiments, but have not begun action consciously.

从实验教学过程和实验资源开发利用情况看：(1)实验室的开放是比较薄弱的环节，绝大多数学校只有上实验课时才开放实验室，因此这些学校的学生进行课外实验和小制作的机会很少；(2)绝大多数学校实验教学仪器的利用情况较好，闲置仪器较少，其闲置的原因主要是实验内容与教材无关或仪器陈旧损坏；(3)实验过程基本上是按教材提供的步骤进行，教师对实验过程和教学仪器的研究和改进较少；(4)很多教师不重视对实验结果的评价，学生很少写实验报告；(5)教师对探究性实验的意义已有认识，但还没形成自觉行动。

This course systematically describes the structure and function, transmission, expression and regulation, and evolution of genetic materials, covering basis of cytology for inheritance, molecular basis of genetic materials, Mendel's principles of inheritance, linkage and sex linkage, genemutation, variations in chromosome structure and number, quantitative genetics, inbreeding and heterosis, inheritance of bacteria and viruses, extranuclear inheritance, gene engineering, genomics, gene expression and regulation, developmental genetics, population genetics and evolution.

本课程全面系统地介绍遗传物质的结构与功能、遗传物质的传递、遗传物质的表达与调控、遗传物质的进化等，包括遗传的细胞学基础、遗传物质的分子基础、孟德尔遗传、连锁遗传和性连锁、基因突变、染色体结构变异、染色体数目变异、数量性状的遗传、近亲繁殖和杂种优势、细菌和病毒的遗传、细胞质遗传、基因工程、基因组学、基因表达的调控、遗传与发育、群体遗传与进化。

According to the principle of energy-storage there are two types of capacitors: electric double-layer capacitor and faradaic pseudocapacitor. Generally, the electrode materials of the supercapacitor mainly include carbon materials, metal oxides and conductive polymers.

根据储能原理，电化学超级电容器可以分为双电层电容器和法拉第准电容器，其电极材料主要有碳材料、金属氧化物和导电聚合物等。

SIGN achieves its improved characteristics by utilizing synthetic base materials, rather than the more traditional materials—such as feldspar, nepheline, or kaolin—found in conventional feldspathic metalceramics.

例如，与常规金属烤瓷常用的传统材料相比，比如长石，nepheline， kaolin

The new separator materials tend toward felted synthetic polymers to replace previous natural fiber felted materials.

新的隔膜材料趋向于用粘合的合成聚合物代替以前的天然纤维粘合材料。

Thin film material and adhesive materials films label material similar or the same, but the pressure-sensitive materials and filmogen in business card printing and membership card making ?also the adaptability of the nature of differences.

薄膜不干胶材料的面材与薄膜标签材料相似或基本相同，但不干胶材料与薄膜材料在制卡和会员卡制作适应性方面有本质的区别。

Film material and adhesive materials films label material similar or the same, but the pressure-sensitive materials and filmogen in business card printing and membership card making ?also the adaptability of the nature of differences.

薄膜不干胶材料的面材与薄膜标签材料相似或基本相同，但不干胶材料与薄膜材料在制卡和会员卡制作适应性方面有本质的区别。

Methods for fire tests on building materials, components and structures.Part 2:Test for flammability of materials.

管道表面燃烧性能测试，适用于评估所有建筑材料表面燃烧性能的测试标准。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。