查询词典 pivot element

At the recentyears, finite element analysis method is applied in technical analysisof sheet metal forming more and more pervasively.

采用动态显式有限元算法对薄板类件多点成形过程进行数值模拟是本文的重要研究内容。本文所作的主要工作如下：1。

Yet the petitionary element is present in all these forms of prayer.

然而， petitionary的因素是目前在所有这些形式的祈祷。

The characteristics of these rocks in petrology, petrochemistry ,trace element geochemistry and their mineralization are introduced in this paper.

文章论述了与铜矿化有关的中酸性浅成—超浅成侵入体的岩石学、岩石化学、微量元素特征，并阐述了该类型铜矿化的基本特

In this paper, though the field geological investigations, and studies of element-isotope geochemistry, mineralogy and the geo-chronology, combining with the regional geotectonic analysis, the geochemical characteristics and petrogenesis of the mafic dikes from the coastal areas of Guangdong Province and Hainan Island are discussed, mafic magma episodes and mantle characteristics are analyzed, and the relationships between mafic magmatism and lithosphere evolution are studied.

本论文通过野外地质调查和一系列配套的岩石化学、微量元素、同位素地球化学、矿物学及年代学方法，结合区域地质构造分析，对广东沿海地区及海南岛基性岩脉的地球化学特征、成因、基性岩浆活动期次、地幔源区地球化学特征，以及岩石圈结构特征、形成机理和演化等进行了探索性的研究，得出以下几点认识： 1。

Carbon and associated rare element gas isotopic compositions indicate that the genesis of the CO_(2 )is mainly by petrosal chemical reaction.

热力学分析表明，盆地7000～8000m深度段的地层远远没有达到纯钙质碳酸盐岩热分解所需的温度，碳同位素和伴生稀有气体氦同位素组成指示CO2主要为壳源岩石化学成因。

But be in China, around " swim " the platform of electronic business affairs that element builds still stays in primary development phase, lag behind at foreign travel developed country apparently.

但在中国，围绕"游"的要素搭建的电子商务平台仍停留在初级发展阶段，明显落后于国外旅游发达国家。

By proper choice of these time delays, the required effective phase shift can be applied to each element.

通过选择正确的时滞，可以在每个单元上获得需要的相移。

The most parts of thesis as follows:1. Five symmetrical intra-molecular charge transfer oligomeric phenylene vinylene light emitting materials were designed and synthesized using oligomeric phenylene vinylene as a framework.2. The structures of target molecule were characterized by ~1HNMR,~(13)CNMR, IR, MS and element analysis.3. In order to study the influence of the location and numbers of electron-donor and electron-acceptor on their photoelectric performance by changing length of OPV chain, the UV spectra and fluorescence spectra of target compounds has been compared. We have researched into main factors effecting on material emitting red-shift; organic electroluminescence device was prepared using the compound P4. The capability of eletroluminescence was researched.4. The photoelectric properties of P4 was explained by quantum chemical calculation (the Gaussian 98 quantum chemistry program). It is greatly contributed know the whole process of charge transfer to guide the design of red emitters.

本文研究的内容主要包括以下部分：(1)设计并合成5个对称的以齐聚苯乙烯类为骨架的分子内电荷转移型齐聚苯乙烯类发光材料；(2)通过IR，MS，~1H-NMR，~(13)C-NMR和元素分析对所合成的目标化合物进行表征；(3)通过对目标化合物的紫外光谱和荧光光谱比较分析，研究改变OPV的长度，电子给体和电子受体的位置及数量对其光电性能的影响，探讨材料发射红移的主要因素；选取性能良好的目标化合物P4制备成OELD器件，对其电致发光性能进行研究；(4)运用Gaussian98量子化学程序包，采用量子化学方法对目标化合物P4的光电性能从理论加以解释，进一步认识荷移跃迁的整个过程，为红光材料的设计加以指导。

By employing the concept of phonography and the techniques of sound walk to collect ethnographic audio material at the Ghost Festival in Kwun Tong, the film breaks away from conventional sound design which stresses dialogue as the main narrative element and uses music to enhance emotions. The unique soundscape of the festival strengthens the poetic impact of the moving images in this experimental documentary.

与一般电影以对白为主要叙述和以音乐带出情绪的传统声音设计方式不同，是次作品运用了实地录音和声音步行的概念和技术，以及源自声音艺术和民族志研究的搜集方法，令这套实验纪录片中的诗化影像更具体地呈现於观塘鬼节的独特声音环境中。

In this process, the phosphatization is incorporated to increase the thickness of the film, and the transition element salt is used as blacken agent to take the placeIIof soluble silver or cOPper salt.

采用非银盐、铜盐发黑剂，系统研究了锌镍合金镀层的黑色钝化工艺，并将磷化工艺结合进钝化中，得到了厚膜型钝化膜。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。