引入

The Yayoi period brought also the introduction of iron and other modern ideas from Korea into Japan.

Yayoi时期，日本开始引入铁器，而且开始从朝鲜引入一些先进的思想。

The thesis takes Yenta Communication and Engineering School as a case to study, it is introduced the whole process on the introduction of the ISO9000 Quality Management Systems Standard and the pass of authentication, some existing problems and relevant experience are also analyzed , and the primary proposes on the application of the ISO9000 Quality Management System Standard are put forward for school.

首先，概括介绍了学校引入ISO9000质量管理体系标准的背景与现状，对学校引入ISO9000质量管理体系标准的理论研究进展进行了综合分析，在此基础上提出了本文写作思路与文章结构。

This paper summarized factors, both in biologic and abiological aspects that affected successful colonization and activity of bacterial inoculation. The impacts of inoculated bacteria on population structure of specific rhizobacterial communities and environment should also be paid an eye on.

本文主要针对国内外在影响微生物根际定殖的因素以及影响引入微生物活性的因素两方面的研究进行综述，同时强调对接种剂引入所引起的生物种群及生态环境变化应予以重视。

Syntheses of PPVs derivatives containing oxadizole by Heck reaction Chromophore of oxadizole was introduced into the chain of PPVs derivatives with alkoxyl as side-chain by Heck reaction.

二。通过Heck反应在PPV主链结构中引入噁二唑基团通过Heck反应将噁二唑引入了不同烷氧取代的PPV高分子主链，所得高分子在THF、DMF等常见溶剂中有较大的溶解度。

The result indicates that the hydrogen bond formed by Arg24 in PTP-1B and benzotriazole molecules is of great importance for the selectivity of the compounds.

计算结果表明PTP-1B中的Arg24与化合物的氢键相互作用是提高选择性的重要因素，并且在R2位引入氢键供体且体积较大的强供电子基团，将有利于化合物抑制活性的提高，而在R2位取代基的末端引入氢键受体且体积较大的强吸电子基团，将有利于化合物选择性的提高。

The results indicates that the glass transition temperature T(subscript g increases, the intensity of exothermal peaks decrease, the thermal stability of the tellurite glass improves, and TeO3 trigonal pyramids transform into TeO4 trigonal bipyramid, when other metal oxides such as TiO2, BaO and WO3 were introduced and the content of TeO2 was fixed.

结果表明，在TiO2的含量一定时，引入其他金属氧化物TiO2、BaO和WO3，玻璃转变温度升高，放热峰强度减弱，碲酸盐玻璃的热稳定性提高。而Raman光谱表明，随着其他金属氧化物的引入，玻璃网络结构中的TeO3三角棱锥体向TeO4双三角锥体转化。

The influence of microwave radiation on Ullmann reaction has been investigated by three Ullmann reactions, including triphenylamine formed by treating the diphenylamine with bromobenzene or Chlorobenzene which substitutes Iodobenzene; 4,4\'-dimethyltriphenylamine formed by treating 4,4\'-dimethyldiphenylamine with bromobenzene which substitutes Iodobenzene; 4,4\',4-trinitrotriphenylamine formed by treating 4-chloronitrobenzene with p-nitroaniline in this paper.

实验表明，在微波辐射条件下，顺式比反式迈克尔反应活性高；若在丁烯二酸的双键上引入甲基后，降低了进行迈克尔加成反应的活性；引入酯基对双键的影响比腈基有利于进行迈克尔反应，丙烯酸甲酯较丙烯腈的迈克尔反应活性高。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

A new type of high-birefringence photonic crystal fiber is brought forward, and the method introducing circinal holes with different sizes or elliptical holes which is used to design high-birefringence photonic crystal fiber is replaced by introducing fluorine-doped solid circles.

提出了一种新结构的高双折射光子晶体光纤，通过引入掺氟实心圆的方式形成双折射，而不采用大多数高双折射光子晶体光纤中引入不同孔径空气孔或椭圆空气孔的结构。

The rate of contribution of various edaphic physical parameters is different from parameter of soil water infiltration model in different soil texture and husbandry condition, so independent variable factor and priority are different in regression models.

在不同的土壤质地和不同的耕作条件下，土壤的各种物理参数对土壤的水分入渗模型参数影响程度不同，因此引入到回归模型中的自变量因子不同，引入的先后次序不同。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。