二源的

The first one is that the Chinese edition of Elements was very difficult to read, and the second one is the idea that all western knowledge originated from China belittle the axiomatic method, the third one is that no logic knowledge came with it then.

从当时的实际出发，我们认为这主要有三个原因：一、《几何原本》生涩难读；二、"西学中源"说轻视西方科学；三、公理化方法传来的时候本身不完整。

The results indicate that the modulators can be discovered through second order cyclic statistics and the faults of the system can be identified.

应用结果表明通过二阶循环统计量能够发现振动信号中的激励源，从而判别系统的故障。

In the body and animals, dimethyl sulfone is one of the main sources of sulfur that is in the synthesis of methionine, cysteine , sulfur-containing tissue, protein and peptide.

二甲基砜是人体、动物等合成蛋氨酸、胱氨酸和含硫肽、蛋白，以及含硫组织中硫的主要供应源之一。

Important significance of regional tectonic regime to metallogenic capacity of Indosinian and Early Yanshanian granites in southeastern Hunan:A case study of Qianlishan and Wangxianling plutons;2. Yanshanian movement and conversion of tectonic regime s in East Asia;3. The Sm-Nd isotopic results indicate that the Archean tectonic regime and crust growth in Northern China Platform can be divided into two stages.

Sm－Nd同位素研究结果显示，华北地台太古宙构造体制与地壳生长可分为二个发展阶段：2800Ma以前，地壳以幔源物质垂向增生为主；进入2800Ma以后，地壳物质开始进入地幔，并以水平运动为主要构造体制，反映板块构造机制在太古宙晚期地质演化中具有十分重要的作用。

Based on the design of Chinese Spallation Neutron Source target station neutron beam extraction pipes, shielding efficiency was evaluated using the two-dimensional discrete ordinates transport code DORT for different design models.

基于中国散裂中子源靶站中子通道设计，采用二维离散纵标程序DORT对中子导出通道各种设计方案的屏蔽效果进行计算分析。

TianChengYuan in gold in Shenzhen City electronics limited company, is a well-known integrated circuit in whole country wholesale dealer, company profession selling agent world famous brand IC, two triode transistors and VCD laser first.

深圳市天诚源电子有限公司，是全国知名的集成电路批发商，公司专业销售代理世界名牌IC、二三极管等。

A 9 -Bit square lattice gas model with temperature was introduced. We fulfilled an acoustic driver using Monte Carlo Method. Using this driver to generate plane waves, a standing sound wave was established in a two\|dimensional pipe.

引入带温度的 9- Bit正方形格子气自动机模型，利用MonteCarlo方法模拟声源并激发平面波，在二维谐振腔中建立了声驻波场。

The water supply system :→ Set source water wells → tube static mixer →-folded plate flocculation tank → tube settler resistance → ordinary filter Chi →→ two-pool pump → distribution network.

采用的给水系统为：源水→集水井→管式静态混合器→平折板絮凝池→斜管沉淀池→小阻力普通快滤池→清水池→二泵→城市管网。

With TEMPO(5 mol%) as the catalyst,N-methyl-N-phenyl-hydrazine(1.2 equiv.) as the amine source,the direct ortho-amination of 2-naphthols could be easily achieved.The reaction was carried out at room temperature under air atmosphere.

以5 mol%TEMPO为催化剂，1.2当量N-甲基-N-苯基肼作氨源，二氯甲烷为溶剂，空气中，室温下，实现了对2-萘酚邻位氨基化，可以高效的合成1-氨基-2-萘酚类化合物。

With TEMPO(5 mol%) as the catalyst,N-methyl-N-phenyl-hydrazine(1.2 equiv.) as the amine source,the direct ortho-amination of 2-naphthols could be easily achieved.

以5 mol%TEMPO为催化剂，1.2当量N-甲基-N-苯基肼作氨源，二氯甲烷为溶剂，空气中，室温下，实现了对2-萘酚邻位氨基化，可以高效的合成1-氨基-2-萘酚类化合物。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。