动力的

Pre-stressed composite space truss is one of the new kind of space structure systems developed on the basis of prestress and space truss, which consists of steel and reinforced concrete. At present the study in this field is just being begun in our country. Therefore, in this paper static and dynamic performances of pre-stressed composite space truss associated with a practical engineering are studied, in addition, dynamic test on construction site and model experiment are done. Finally, we conclude this structure is well in stress and stiffness and dynamic characteristics.

预应力组合网架是一种基于网架和预应力技术发展起来的由钢和钢筋混凝土组合而成的新型预应力空间结构体系，目前国内在此领域的研究和应用都较少，为此，本文结合实际工程对预应力组合网架进行了静力和动力的分析研究，并作了施工现场的动力测试及模型试验，总结出预应力组合网架受力比较合理，刚度、动力特性好，是值得推广的一种空间结构形式。

Kinetogenic Medicine is important to treat disease of gastrointestinal dyskinesia.

随着对胃肠动力的深入研究促胃肠动力中药已成为研究热点。

The scattering wave velocity potential to the flexible circle pile was the solution of the Laplace equation, which satisfied the cylindrical surface non-homogeneous boundary condition.

采用动力Winkler弹性地基梁模型模拟桩土动力的相互作用，通过求解满足柱面非齐次边界条件的Laplace方程，直接构造波浪对柔性桩的散射速度势，考虑了流体和桩体的相互作用，由解析法给出了埋置圆桩在波浪荷载下的动力响应。

The theories of enterprise development and enterprise impetus connect with the fact in the thesis. It reaches a conclusion of reciprocal relation between enterprise development and enterprise impetus, and has established the model of reciprocal relation between enterprise development and enterprise impetus.

本文将企业发展理论和企业动力理论与实际相结合，得出了企业发展与企业动力的相互关系，并建立了企业发展与企业动力的相互关系模型。

Thus, under one failed but sure to resurface formulation, the suburbanite who buys a hypothetical hybrid Dodge Durango that gets 14 miles per gallon instead of 12 thanks to its second, electric power source would be entitled to a huge tax incentive, while the buyer of a conventional, gasoline-powered Honda Civic that delivers 40 miles per gallon on the open road gets none.

这样，按照一伏一起的公式，购买一台假想的混合道奇Durango的郊区居民，由于它的二级动力，每加仑行驶了14英里，而不是12英里，它的电动力将享受到巨大的税收优惠；而购买传统汽油动力的本田思域的买主，公路上每加仑行驶了40英里，却得不到一点税收优惠。

ABSTRACT The Yellow River delta located in the land and sea interaction zone and is being formed with the coaction of the River and Bohai sea. The three parts of the whole delta, i. e. the delta plain, tidal zone and submerged delta, are in different dynamic environments. The delta plain is controlled by the land surface processes. The tidal zone is under the coaction of the river and the sea.

黄河三角洲处于海陆交错地带，是河流与海洋因素共同作用的堆积体，从陆上三角洲平原到潮间带直至水下三角洲受不同动力因素的作用，陆上三角洲平原主要受陆地表层过程的影响；潮间带受陆、海动力的共同作用，而水下三角洲主要受海洋动力的作用。

Objective:The study mainly utilize the raphanus which is a edible Chinese officinal herb and has little side-effect, easily accepted, steadly effect, and so on, to exploit its pharmacological value on gastrointestinal motility. By observing the effects of the crude extract of radishon the electrogastrogram,gastric emptying and small bowel peristalsis activity of the rats in vivo ,the effects of Ecr on gastrointestinal motility could be manifested. Furthermore, the contrast study about the effects of gastrointestinal motility was also observed among Ecr domperidone and prepulsid. The mechanism was explored by observing Ecr on the expression of Fos protein of the dorsal vagal complex.

目的：本研究主要利用十字花科萝卜属植物白萝卜作为食源性中药，具有副作用少、易被接受、作用稳定等特点，通过白萝卜提取物(The crude extract of radish，Ecr)对在体大鼠胃排空、肠推进、胃电活动的观察，并与经典的促胃肠动力药物进行对比观察，研究提取物对大鼠胃肠动力的作用；进一步通过研究提取物对大鼠中枢支配胃运动的迷走复合体(Dorsal vagal complex，DVC)中Fos蛋白表达的影响，从而反映DVC被激活的情况，来探讨白萝卜提取物促进胃肠动力的机制，从而为其在胃肠动力相关的功能性疾病的治疗上的应用提供实验基础和理论依据。

The moving boundary condition, arc-length inters transformation and linear interpolation method is used to control the density of the grids near the surface of the ship hull and within the computational domain.

计算表明，研究船舶作操纵运动时的水动力，考虑粘性边界层与不考虑粘性边界层的水动力计算结果有明显的差别，说明粘性对作操纵运动船舶水动力的影响比较明显。

Apparently, the scientific propaganda depends to an ultimate extent on how to comprehend China"s fantastic achievements and big lapsus in socialist construction under Mao"s leadership.

科学地宣传毛泽东思想，有赖于完整并准确地理解毛泽东同志在领导中国社会主义建设时期的伟大成就和种种失误，这就要科学地研究和挖掘毛泽东同志用以指导中国社会主义建设实践的有关理论即社会主义发展动力理论，并在毛泽东关于社会主义发展动力的理论中追根求源，找到这些成就和失误的理论根源，为在新形势下不断推动中国社会主义建设事业的健康发展找到动力本原。

To achieve high reliability rig build momentum across the company Petroleum Chi Chai attached great importance to develop a detailed implementation plan: first, optimizing the current oil market, the popular 4012-based long-stroke diesel engine supporting 1000kW diesel generating sets to meet our 7000 meters below the oil drilling rig for electric power demand in 2009 in the second half on the market; second, strengthen the 4012 Long-stroke diesel engine, and the supporting 1100kW diesel generator sets, China's oil industry to meet the full demand for electric power drill, the end of 2009 the completion of prototype evaluation.

为实现打造高可靠性钻机动力，中油济柴公司上下高度重视，制定详细的实施计划：第一步，优化目前在油田市场广受欢迎的4012型长冲程柴油机配套的1000kW 柴油发电机组，满足我国石油钻探7000米以下电动钻机对动力的需求，2009年下半年投放市场；第二步，强化4012型长冲程柴油机，配套1100kW 柴油发电机组，全面满足我国石油行业电动钻机动力的需求，2009年年底完成样机评定。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。