右图中的球是围绕碳原子的电子云的图像。 它们分别是径向对称的球和中间有节点的双扁球形状,就像s和p原子轨道给出的电子密度图。
There’s a radially symmetric blob, and a double-lobed blob with a node in the middle – just like the patterns of electron density that the s and p atomic orbitals give rise to.
这种双侧不对称开始出现在青少年发育的第六阶段。
This bilateral asymmetry begins to appear in the juvenile sixth stage of development.
本文利用半地转模式研究了对称和非对称地形以及双地形对冷锋锋生过程的影响。
The influences of symmetric, asymmetric and double mountains on the frontogenetical process of a cold front are studied by using a semigeostrophic model.
应用非对称理论研究了双热带气旋的相互作用。
The interaction of binary tropical cyclones is investigated applying the asymmetric theory.
它利用多谐振荡桥励磁的单纳米晶磁芯双绕组差动对称结构。
The sensor has differential symmetric structure with single nanocrystalline core and double coils excited by multivibrator bridge.
研究了半导体非对称双异质结(ADHS)中,极化子的基态性质。
The polaron ground state in asymmetric double heterostructure (ADHS) is studied.
提出了一种电网对称故障时保持双馈感应风力发电机不脱网运行的新型励磁控制策略。
A new excitation control strategy is proposed for the rotor side converter in a doubly fed induction generator (DFIG) to allow the system to ride through a symmetrical grid fault.
结节散在并呈斑片状分布,以上肺和背侧为主,对称性的累及双上肺。
The nodules are scattered and patchy in distribution, and predominate posteriorly and in the upper lobes. The nodules show symmetrical involvement (Figure 2, Figure 3) of both upper lobes.
利用耦合多量子阱载流子动力学模型,模拟了非对称双量子阱中载流子耦合的温度依赖性。
The temperature dependence of the carrier coupling in an asymmetric double-quantum-well was simulated by using the coupling multiple-quantum-well model of carrier dynamics.
利用结构对称的双压电陶瓷传感器实现了切变力的探测,并为探针-样品的间距控制与成像提供了一种有效手段。
Shear force detection is carried out by using a symmetric piezoelectric bimorph sensor, which provides an easy way not only for probe-surface distance control but also for imaging.
目的:评价双排螺旋CT肺部非对称扫描方式的临床应用价值。
Purpose: To evaluate the clinical applications of the asymmetric scan mode using dual-slice spiral CT.
构造了一种迭代法求一类矩阵方程的最小二乘双对称解。
An algorithm was constructed to solve the least squares bisymmetric solution of a class of matrix equation.
提出了一种利用不对称分数傅里叶变换和双随机相位编码对图像加密的方法。
A new optical image encryption method using dissymmetrical fractional Fourier transform and double random phase encoding was presented.
结论:双侧腰大肌不对称及腰大肌萎缩变细可能均是腰椎间盘突出的解剖因素之一。
Conclusion: Both the asymmetry between right and left psoas muscles and the amyotrophy or attenuation of the psoas muscle are probably the anatomical factors which lead to lumbar disc herniation.
我们给出了有限维对称自对偶色李代数可以双扩张的充分条件,从而在上同调意义下解决了这类色李代数的分类问题;
We give a sufficient condition for a finite dimensional symmetric self-dual Lie color algebras to be a double extension, thus we solve its classification in the sense of cohomology;
第二部分是在非对称的双量子点中电压调控的慢光效应。
The second part involves voltage controlled slow light effects in asymmetry double quantum dots (QDs).
本文分析了直流电机双闭路双叠绕组的结构、对称条件和均压连接线。
Construction, symmetry conditions and equalizer connections of a multiplex double-closed lap winding of the D. C. motor are analyzed in this paper.
采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法,解决了正负母线绝缘均按比例下降时失效的问题。
A new method is adopted to real-timely monitor DC system insulation, which applies double asymmetrical Bridges to keep it effective when positive and negative pole insulations drop in same proportion.
首先根据有限交换群上对称双特征标的概念,给出着色李超代数的定义,并介绍关于着色李超代数的一些基本概念与基础知识。
First, we give the definition of Lie color superalgebras using the symmetric bicharacter on a finite commutative group, and also we introduce some fundamental notions about Lie color superalgebras.
方法分析双曲对称群的特点,改造欧式平面上构造经典分形的IFS迭代函数系,利用这种迭代函数系与双曲平面对称变换构造出组合IFS,通过随机挑选组合IFS中的仿射变换,构造双曲排列的分形集。
We recall the characteristics of the groups with hyperbolic symmetry and improve the IFS iterated function systems which are used to construct the classical fractal sets in the Euclidian plane.
再次,根据经典接触力学中的赫兹理论推导了双压力角非对称齿轮的齿面接触应力计算公式;
Thirdly, the contact stress equations of asymmetric gear with two pressure angles are derived by the Hertz theory of classical contact mechanics.
在第三章中,我们利用格林函数方法研究了非对称的双量子点分子的谱性质和电子输运性质。
In chapter three, we study the spectral properties and electronic transport properties of asymmetrical double-dot molecule using causal Green's function approach.
文中从双环网络的图论模型出发,证明了双环网络中一个被广泛关注的问题,即双环网络直径的对称性,并给出了一些应用。
This paper starts off with the FIG model, proves one important matter about double loop networks, namely, the symmetry about double loop networks, and enumerates some applications.
对于轴向阶梯载荷下圆柱壳的非轴对称动力屈曲,将临界应力和屈曲惯性指数作为双特征参数求解。
Critical stress and inertial exponent are treated as two characteristic parameters for the asymmetric dynamic buckling of cylindrical shells under axial step loading.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
最后,证明了在一些经典赋范空间中对称性的双正交元存在。
Finally, the existence of symmetry biorthogonal elements in some classical normed Spaces is proved.
本文从实际应用出发,提出“裕度平衡法”用于双支点非对称布置的滚动轴承选择设计。
For practical application, a balance method of surplus strength is proposed for selection design of rolling bearings which are non-symmetrically arranged and supported at two points.
本文从实际应用出发,提出“裕度平衡法”用于双支点非对称布置的滚动轴承选择设计。
For practical application, a balance method of surplus strength is proposed for selection design of rolling bearings which are non-symmetrically arranged and supported at two points.
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