直交的

Myth and art are interknit from their birth. The first, myth and art all are fictions. The second, myth has double structures of conception and sensibility, theory and art. The third, be related to the characters of mythical thought, myth had unified intuitive images and feelings, but feelings of myth is different from that of art. The forth, feelings of art have a character of associability.

神话和艺术从生成始就是有着密切的联系的：首先，神话和艺术一样都是一种虚构；其次，神话具有概念和感性、理论和艺术的双重结构；再次，与神话思维的特征相关，神话具有直感性与情感的统一性，但是神话中的情感不同与艺术中的情感；第四，神话情感有交感性的特点。

In this paper, we mainly use complex semisimple algebras knowledge. First, we give the structure formula of C. Second, we show that any n x n symmetric matrix A is congruent under the symplectic group to the direct sum of a identity matrix and a tridiagonal matrix.

记正交代数和辛代数的交集构成的李代数为L，本文主要是运用复半单李代数的知识，首先给出了L的结构公式，然后给出了任一n×n对称矩阵A辛合同于一个单位矩阵和一个三对角矩阵的直和。

Portugal's flag has a red and a green stripe, and at their meeting point is an armillary sphere positioned underneath the Portuguese shield.

葡萄牙的国旗图案有红色和绿色的双直条，双条交间处是一个浑天仪，刚好位于葡萄牙盾牌的下方。

The distribution of gear's contact stress, root stress, and contact engagement line in the engagement situation of gear pairs, were obtained on the base of explicit integration method. 3. Adopting the method of system matrix, the torsional vibration differential equation of general shafting was gained. The simple harmonic forms of excitation torque under the normal combustion or piston flameout of in-line engine and v-type engine were analysed. The decoupled algorithm of free vibration and forced vibration and the solution to the vibration damper's energy of resistance and the off-resonance calculation were studied. The sensitivity formulations of the natural frequency and vibration mode to physical parameters of system were derived by solving the eigenvalue problem. These sensitivity formulations provided the theoretical base for the dynamic modification of structure.

运用系统矩阵法建立了轴系的扭振微分方程，并对直列和V型发动机在正常发火和气缸熄火工况下的激振力矩进行了详细的简谐分析；基于精确方法推导了自由振动和强迫振动的解耦算法，给出了能量法计算中的减振器阻尼功求解和非共振计算方法；并研究了曲轴系扭振非线性分析中的变惯量问题，得到了单缸转动惯量的精确求解公式以及变惯量和固有频率的关系式；最后，从特征方程和振型正交性出发，推导了固有频率和振型对轴系转动惯量和刚度等物理参数的灵敏度，为扭振系统的结构动力学修改提供了理论基础。

Portugal's flag has a red and a green stripe, and at their meeting point is an armillary sphere positioned underneath the Portuguese shield.

葡萄牙的国旗图案有红色和绿色的双直条，双条交间处是一个浑天仪，刚好位於葡萄牙盾牌的下方。

According to the characteristics of the larger start electric curent, start torque and the demagnetizing influence of the armature reaction of motereycle starter at the moment of starting, the formula of the largest demagnetizing magnetic- power is deduced and the magnetic method of separehng alnico is gnined on the basis of the largest dernagntizing magntic - power.

根据摩托车起动电机起动电流大、起动转矩要求高的特点，以及起动时直轴电枢反应和交轴电枢反应对永久磁铁的去磁作用，推导出最大去磁磁势的计算公式，给出了根据最大去磁磁势选择磁钢的方法，并通过实测证明电枢反应对起动电机性能的影响。

In order to optimize parameters of threshing system of corn thresher with different speeds threshing parts, and minimize mechanical damage of corn seeds in the course of threshing, an experiment of second order regression orthogonal rotation design was carried out with rotating speed of straight roller, feeding quantity and kernel water contents as influence factors and broken rate of kernel as major criterion.

为优化差速式玉米种子脱粒机脱粒系统的有关参数，进而降低玉米种子在脱粒过程中的损伤，该文采用二次回归正交旋转组合设计的方法，以籽粒破碎率为主要性能指标，选取直辊转速、喂入量、籽粒含水率为试验因素，对差速式玉米种子脱粒机进行了性能试验。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。