存在

Using Spatial Lag Model and Spatial Error Model, a spatial econometric analysis on institutional spillover effect of marketization degree in China's provinces and the effect on regional economic growth is performed. The results of spatial analysis show that after nearly 30 years' development of China's provincial economies reform and opening, the spatial association becomes closer while geographical clustering obviously intensifies, and the institutional spillover effect among the provinces becomes confessedly.

摘要本文从空间分析的角度研究各地区市场化进程的空间效应及其对区域经济增长绩效的影响，空间计量经济分析的结果表明市场化进程的空间分布在整个样本区间与GDP、资本和劳动一样呈现出集聚的趋势，区域差异显著，各地区的市场化进程在地理空间上存在显著的自相关关系，证实了各地区市场化进程存在制度溢出效应。

The definitions of confidence coefficient and equivalent variance are introduced to indicate the feedback quality,and their closed expressions are derived under the practical environment with both feedback delay and feedback error.

对于实际中反馈时延和反馈误差同时存在的情况，推导了表征反馈质量的置信系数和等价方差的通用闭式表达，将现有只存在反馈时延或反馈误差下的结果扩展到一般情况。

Configurational isomerism is then due to the presence in the molecule of one or more dissymmetric centres ,in the simplest case asymmetric carbon atoms ,each of which can have and absolute configuration; and ,or ,to the presence of double blonds which can give cis- and trans-geometrical isomers .

构型异构是由于分子中存在一个或一个以上的不对称中心，在最简单的情况下是不对称碳原子，每个不对称碳原子的绝对构型是和；或者，如果存在双键的话，那么将给出顺式和反式几何异构体。

The results indicate that there are 8 stable conformers for D4G in gas phase. The conformer d4g-2 is the most stable form of all conformations in gas phase.

结果表明，孤立的D4G分子在气相中存在8种稳定构象，其中构象d4g-2是所有构象中最稳定的，气相中D4G主要以d4g-2存在。

1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物；变温1H NMR和理论计算结果表明，在300 K时，葛根素和4'-丙基葛根素以单一构型存在；而7，4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体，当温度升至330 K时，两种异构体可以相互转化；通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算，确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子，并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

But to affirm to cheat what, letter of credit whether the existence cheats, and what the materiality cheat in the judicial circles to all exist to dispute more and greatly, is also the main reason which produces congelation stop payment phenomenon to disorder.

但对认定何为欺诈、信用证是否存在欺诈，以及何为实质性欺诈在司法界都存在较大争议，也是产生冻结止付现象混乱的主要原因。

It is the connective people who are the beginning to know the society.

国家或社会这样的共同体，仅仅是人们为了认识而建立的框架而已，它们既不可能是终极性的存在，也不可能是客观的存在。

Examination and comparison show that two distinct forms of marriage are requisite to explain the Malayan and Turanian systems; whence the application, as tests of consanguine marriage in one case, and a punaluan marriage in the other.

通过观察与比较就可以看出：想要解释马来亚式和土兰尼亚式亲属制，必须有两种不同的婚姻形式；从而使前者证明了血婚的存在，后者证明了伙婚的存在。

Study 2 was designed to explore the relationships among cognitive performances, cognitive styles and Conscientiousness.

在各种任务中的人情偏向一事情偏向的认知方式的评价分数上不存在显著差异，高低宜人性被试在认知方式类型上也不存在显著差异。

Contrary to common sense, all existences depend on the consensual existence of all others.

与常识相反，一切实体的存在都取决于其他物体的同感存在。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐