查询词典 Electra complex

Archimedes obtained the parabolic arch, spiral, circular area and volume as well as the ellipsoid, parabolic complex geometry and physical size.

阿基米德求得了抛物线弓形、螺线、圆形的面积和体积以及椭球体、抛物面体等复杂几何体的体积。

And multiobjective optimization of complex structure with the help of neural networks and uniform experiment design, etc. As an example to illustrate the theory of this thesis, Robust design of a 10m antenna reflection part with circular paraboloid surface is proceeded. Antenna attracted people's research in these years because it is structure with very high precision.

作为实例，论文中对某10m圆抛物面天线反射体进行了健壮性设计，得到了原问题的健壮最优解，不仅实现了原系统的性能优化，同时使天线的性能在受到可控因素较大的范围的变异时所产生的变异达到最小，实现了系统的健壮性。

The plane parallel movement of unyielding body is studied in this paper,so the kinematies by means of complex vector is formed an integral system.

另一方面，本文用复矢量方法研究刚体的平面平行运动，也使得用复矢量方法研究运动学形成一个完整的体系。

The plane parallel movement of body was studed.Velocity formula and acceleration formula of point in the plane graph is proved by means of complex vector,and a simple method to obtain the velocity and acceleration is proposed.

研究刚体的平面平行运动，用复矢量方法推导了平面图形内各点的速度、加速度关系式，给出了求解平面图形内各点速度、加速度的简捷方法。

A new algorithm of optimizing the complex circuit by using parallel gene expression programming was proposed.

提出一种新的基于并行基因表达式程序设计优化复杂数字电路的算法，该算法通过各子种群之间优良个体的迁移，有效地传播优良个体，充分发挥了优良个体的导向作用，提高了传统GEP的全局寻优能力以及求解精度和收敛速度。

For the first time, this study conducted a series of field sampling in multiple locations over several years and demonstrated that the B and Q biotypes first invade areas with high frequency of transport through human movement of plant materials, and then rapidly spread into surrounding areas and displace indigenous genotypes, and in parallel with displacement significant changes in sex ratio occurred in the mixed populations. Crossing experiments demonstrated that in the B. tabaci species complex there are many genetic groups that are completely or nearly completely isolated in reproduction. Apart from behavioural mechanisms, difference in host plant suitability and insecticide susceptibility between whitefly biotypes may also play important roles in the displacement of indigenous whiteflies by alien whiteflies in Zhejiang.

本研究首次以一个地理区域内广泛系统的野外调查数据证实，B型和Q型烟粉虱首先通过花卉苗木调运入侵交通较为发达的地区，然后迅速向周边扩张并取代土著烟粉虱，同时入侵取代过程伴随着混合种群中性比的变化；杂交试验证明烟粉虱复合种内存在多个生殖上隔离或基本隔离的遗传群；B型烟粉虱在浙江省内迅速取代土著烟粉虱，除行为机制外，生物型之间寄主适应性和药剂敏感性等方面的差异也可能在此过程中起着重要作用。

Configuring devices attached to a parallel port can be more complex.

配置对一个并口的装置附件可能是更复杂的。

The experiment data of paramecium from Gause was used to investigate the efficiency of the method. And the twelve nonlinear real examples from "Agricultural Experimental Statistics" written by Mo Huidong were used to compare the difference between results fit by the Excel and the linear transformation method, respectively. The result showed that the Excel fitting method is not only simple and efficient for the parameter estimation but can fit various complex nonlinear equations also.

采用Gause的4组草履虫数据，研究了用Excel的"规划求解"工具进行非线性方程拟合的有效性，并以莫惠栋的《农业试验统计》一书中的12个非线性方程实例，比较了用Excel拟合与用常规线性转换方法拟合的差异，结果表明：用Excel进行非线性方程的拟合不仅简单易行、获得更优的参数估计，而且可以拟合各种复杂的非线性方程。

These efforts help to disassemble the complex task of the ship structure knowledge system into some relatively simple sub-tasks, and to found the parameter representation method for concerned knowledge in the knowledge base of structure design.

船体结构布置和计算纷繁复杂，本文通过对大中型集装箱船的结构模块化分析和计算，给出了大中型集装箱船系列化的主尺度变换原则、结构模块的划分方法以及结构标准件和可变件划分计算方法，为集装箱船中剖面结构设计知识系统的任务分解以及结构设计知识库中的有关知识的参数化标准模块表示打下了基础。

An algorithm which can draw any complex surfaces expressed by explicit equation or parametric equation was given.

提出了显式方程和参数方程表示的曲面的一种绘制算法，该算法可以绘制任意复杂的方程曲面。

There are 8 main characteristics in Zhuang's religion,in which it seems infrequent inside or outside the country that many types of religious jinns coexist in harmony.

壮族宗教的特点主要有8个方面，其中多种宗教神灵和谐共处，为国内外少见。原生型民间宗教；结构；特点

We summarized the development of two kinds dwarf mutants involved in gibberellin biosynthesis and signal transduction pathway.

对这些这些突变体的研究促进了对赤霉素生物合成和信号传导途径的认识，同时为赤霉素更好地利用提供了科学依据。