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Based on the three dimensional surface data of the face and skull, methods of geometric analysis on them are presented through these parameters with their numerical calculating methods under the landmarks of the anthropologist and anthropometrist are proposed,which is the foundation of the statistical model that will be used in the field; 4Geometric analysis methods that based on the approximation coefficients of spherical harmonic functions are proposed.

以三维面皮和颅骨数据为基础,分别给出了基于公安法医学标志点和人体测量学标志点的几何分析主要途径和方法,确定了几何分析的主要参量,并给出了相关的计算方法,为建立颅面统计模型奠定基础; 4基于球面调和函数的颅面形态学的几何分析方法。

To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大体积混凝土及混凝土裂缝的基本概念,对国内外在这个领域里的研究现状作了扼要叙述,并从结构设计、混凝土材质、施工措施等方面总结了大体积混凝土温度裂缝控制的方法及防止措施;阐述了混凝土的基本物理力学性能,总结了大体积混凝土温度计算的方法——差分法和有限元法,并分别举例说明其具体应用的方法;分析了影响大体积混凝土底板温度应力的几种温度因素,利用ANSYS模拟计算,得出了每种因素的影响程度,通过分析提出了在这几种温度影响因素下如何通过控制温度以达到控制温度应力从而来控制裂缝的具体建议;针对大体积混凝土基础底板中配筋的不同对混凝土底板抗裂能力的影响不同,利用ANSYS进行模拟分析,得出底板中最合适的体积配筋率,同时分析了在相同体积配筋率下钢筋的具体布置对大体积混凝土基础底板抗裂能力的影响,分析表明,配置钢筋对混凝土结构的开裂阻止作用明显,在研究大体积混凝土温度裂缝题目时,要考虑钢筋在其中的有利作用。

The basic types of symbol rhetoric methods and the characteristics of each type were introduced based on semiotic theory. The practical applications of rhetorical methods were analyzed with cases. The functions of rhetorical methods in product design were discussed.

从符号学理论的修辞方法出发,详细介绍了符号修辞方法的基本类型以及各类型的特征;通过案例分析符号修辞方法的具体应用,阐述符号修辞方法在产品设计中的作用。

Results showed a high-purity and a good-integrity DNA can be obtained from the preserved fresh leaves of Camellia azalea, using the methods of modified CTAB and SDS subarea. The DNA extracting quality from the leaves preserved with silica gel by the methods of modified CTAB and SDS subarea is high, which is the same as from the leaves preserved at the -200C and liquid nitrogen, So these preserving methods are suitable for the fresh leaves of Camellia azalea, including for it from distant place.

结果表明,改进的CTAB和SDS区室法都适合杜鹃红山茶基因组DNA的提取,都能提取到完整性较好、纯度较高的基因组DNA,且在采用的-200C、液氮、硅胶脱水干燥3种方法保存样品中,硅胶脱水干燥法保存的样品与其它几种方法保存的样品一样,提取获得了高质量DNA,为远距离采样提取杜鹃红山茶DNA提供了一种较好的鲜叶保存方法。

Methods: Adopting pig bile culture medium, the inhibiting or killing effects on pig bladder worm in vitro were observed;by using the methods of xylene-induced ear inflammation in mice and granuloma swelling induced by cotton ball in rats, the effects of anti-inflammation were observed;by using the methods of body twisting and hot-plate in mice, the effects of analgesia were observed. Through the mice auricle microcycle, the rats thrombus law in vitro and bleeding time, clotting time determination to the mice, the function of invigorating the blood were observed;adopting the penicillin abdominal cavity injection method, the mice epilepsy model were prepared, and epilepsy mice brain organization MDA content and SOD, ATPase vigor be measured by using chemical colorimetry.

利用猪胆汁培养基观察该方在体外对猪囊尾蚴的抑制或杀灭作用;采用二甲苯所致小鼠耳肿胀法、大鼠棉球肉芽肿法以观察该方的抗炎作用;采用热板法和化学刺激扭体法观察该方的镇痛效果;通过小鼠耳廓微循环法、大鼠体外血栓法和对小鼠出、凝血时的测定观察该方的活血作用;采用青霉素腹腔注射法制备小鼠癫痫模型,并利用化学比色法检测癫痫小鼠脑组织中MDA的含量及SOD、ATPase的活力。

The basic principle, advantage, disadvantage and the improvement for measuring liquid surface tension with different methods were described. The methods were capillary rise method, Wilhelmy plate method, pendent drop method, drop volume method, maximum bubble pressure method. The problems in the surface tension measurement of wide temperature and pressure range, the chosen of experimental methods and the development tendency of these were introduced especially in this paper.

本文着重介绍了几种液体表面张力的测定方法(包括毛细管上升法、Wilhelmy盘法、悬滴法、滴体积法、最大气泡压力法),包括这几种方法的测定原理、优缺点及改进方法,特别指出了宽温度和压力范围的表面张力测定存在的问题,实验方法的选择及表面张力测定方法的发展趋势。

Since the 19th century, classical celestial mechanics system and the formation of planets and the moon Sports theory has become a complete theory of .19 century to the 20th century, 50 years is the period of modern celestial mechanics, improved analytical methods, additional qualitative methods and numerical methods .50 years after the study of celestial mechanics celestial object from the solar system be extended to man-made objects Movement Theory, as well as a few star systems, broadening the field of study.

此后到19世纪末,经典天体力学体系形成,大行星和月球运动理论已成为完善的理论。19世纪末到20世纪50年代是近代天体力学时期,改进了分析方法,新增加了定性方法和数值方法。50年代以后,天体力学的研究对象从太阳系天体扩展到人造天体运动理论以及为数不多的恒星系统,拓宽了研究领域。

There are many methods to compute determinant, but the different methods, in the actual computation process, only suit for the different characteristic determinant. The present paper mainly studies 14 kinds the most common and also the most important methods.

计算行列式的方法非常的多,在实际的计算过程中不同的方法往往适合于不同特征的行列式,本论文主要研究其中的十四种最常用的也是最重要的方法。

Methods of measuring the input components, their prices and output elements are given. We put forward some new methods in measuring components, including composite depreciation rate, equality working hours, and proxy of input resources. Using the mature methods of efficiency measurement and decomposition available, we make a detailed investigation into 4 listing companies of oil industry with a span of 12 periods. Basic conclusions we draw include: labor inputs affects oil field output mostly in China; China oil fields operates in a low technical efficiency level average of 0.61; Increasing difficulties with expanding output has the greatest influence on cost; Cost efficiency of China oil fields averages at 1.47; Total factor productivity of China oil fields averages at 10%, accounting for 79% of the total output growth rate of 12.6%; Frontier technology progress contributes the most to TFP of China oil fields with 17 percentage points.

本文沿用了已有文献中关于效率计量与分解的成熟方法,对我国三家油田上市公司与一家上市石油公司12个时期的技术效率与成本效率进行了详细的计量、分解与分析,得到的基本结论有:劳动力投入是影响我国油田上市公司产出的最重要的影响因素;油田的平均技术效率仅为0.61;产出项是影响成本的显著因素,这说明随着产出增加而出现的开采难度增加是导致开采成本增加的重要因素;油田的平均成本效率为1.47;全要素生产率的增长平均在10%左右,占到了产出平均增长率12.6%的79%,表明我国油田的生产率的提高主要是依靠全要素生产率的提高而实现的,只有21%左右的产出增长是依靠要素投入而实现的;前沿技术进步是油田全要素生产率增长的主要源泉,在2001~2004年期间,前沿技术进步对油田生产率的贡献高达17个百分点。

By the study of several typic methods of determining convexo-concave features for vertices of polygon, the computation time complexity of these methods was analysed, and those methods were implemented in VC++.

摘 要:主要针对几种典型的多边形顶点凸凹性识别算法进行研究,对它们的计算时间复杂度进行分析,并用 VC++6.0实现多边形顶点凸凹性的高效识别。

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推荐网络例句

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。