查询词典 symmetry

For thin sections of each crystal face, the TEM image along only [110] direction is observed, moreover, at each crystal face, the diagonal of the rectangular repeating unit is parallel to the crystal edge, in accordance with an ideal crystal model with Im3m symmetry.

以非离子嵌段聚合物EO〓PO〓EO〓为模板剂，首次合成出了高产率（100％）、形貌规则、大小均一（在1μm左右）、纯的立方相(Im3m)纳米介孔氧化硅单晶。

The payoff function v thus defined is proved to have supperadditivity,and the Shapley value so defined proved to satisfy axioms such as efficiency,symmetry,dummy and additivity.The fuzzy Shapley value method for profit allocation in enterprise coalitions was thus given by examples.

并证明了支付函数v具有超可加性，以及Shapley值满足有效性、对称性、哑元性与可加性的公理体系，实例证明了企业联盟收益分配的模糊Shapley值方法。

It is a innovation in concept and construction of mobile robot. The metamorphic and mobile robot with eight joints and twelve degrees is symmetry mechanism and a pedrail mechanics connects with the box through a arm.

变形移动机器人的概念，是山东科技大学机器人研究中心在成功地完成了国家863项目"喷浆机器人"和国家自然科学基金"四周履带式蛇形机器人"的研究的基础上提出的，是一种对"移动机器人"的概念创新和结构创新。

Elongate, pennate diatom, typical bilateral symmetry, more typical of freshwater environments .

圆形，辐射对称，壳面上的花纹呈辐射状排列，海产多。

In addition to the unusual symmetry, Penrose tilings reveal a pattern of overlapping decagons.

除了不寻常的对称，彭罗斯面砖揭示了重叠decagons模式。

The symmetry group is the permutation group acting to exchange particles of the same type.

对称组是置换群代理交换颗粒同一类型。

This observation suggests that the relationship between classical and quantum systems is not so clear as it is often portrayed and that the permutation group could also be a part of the same universal symmetry as gauge invariance.

观测表明，这之间的关系经典和量子系统就不那么明确，因为它往往是描述，而置换群也可能是出于同样的普遍的对称性作为规范不变性。

Physical scientist ; Einstein ; harmoniousness ; unification ; symmetry ; perfection

物理学家；爱因斯坦；和谐；统一；对称；完美

According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

基于平面截面假定，弹性杆的位形表达为截面的弧坐标历程，根据平衡微分方程得到了两端受力螺旋作用时的直线平衡特解，导出了线性化扰动方程及其通解，积分常数根据两端铰支时的边界条件确定，并根据其存在非零解的条件得到弹性直杆精确模型的Greenhill公式，表明稳定域为一对称的封闭区域，拉/压和剪切对稳定性的影响取决于：拉/压柔度与剪切柔度之差，抗弯刚度和杆长这三个因素

Symmetry of plane curve is important to function research.

平面曲线的对称性对于函数研究具有重要意义。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。