The quantities ba β are the covariant components of a plane tensor, called the curvature tensor of the surface. baβ是“平面张量”的协变分量,叫做该曲面的曲率张量。
But if ln were aliased with li, then it would break the type-safety promise implicit in the definition of li& that it is a list of integers, which is why generic types cannot be covariant. 但是如果ln是li的别名,那么这就破坏了蕴含在li定义中的类型安全承诺&它是一个整数列表,这就是泛型类型不能协变的原因。
On the other hand, generics are not covariant; List is not a subtype of List, and attempting to supply a List where a List is demanded is a type error. 另一方面,泛型不是协变的,List不是List的子类型,试图在要求List的位置提供List是一个类型错误。
Based on the increment of diversity and covariant discriminant function, the protein subnuclear location was predicted by using of the amino acid compositions and N-terminal dipeptide compositions. 利用离散增量结合协变判别函数,选取氨基酸组份和N端氨基酸二肽组份为信息参数,对蛋白质亚核定位进行预测。
Every vector can be resolved into covariant or into contravariant components. 可分离变量微分方程每个矢量都可以分解成协变分量或逆变分量。
As a point of interest, Odersky and friends have recently come up with an interesting solution to the covariant arrays+ unboxed primitives issue: generic type specialization. Odersky和朋友们提出了一种有关协变数组和消除原生的解决办法:泛型特化。
Once released into the wild, the only change that can be made to it is adding the covariant and/ or contravariant markers ( expressed as "in" and "out" in VB and C#). 一旦全面推出,对其能做的唯一改变就是添加协变和/或逆变标记(在VB和C中表示为“in”和“out”)。
Four-Dimensional Covariant form of Constitutive Relationship and Potential Equation in Moving Medium and Retarded Solution; 在真空中麦氏方程组四维协变形式的基础上,推导出介质中麦氏方程组的四维协变形式。
Voltage covariant coding method based on time distribution and its application 一种基于时间分配的电压协变编码方法及应用
We obtain two formulas about the covariant derivative of the coordinate functions on the unit sphere in Eucdidean space. 得到了欧氏空间中,单位球面上坐标函数关于某一特定标架场的协变微分的两个等式。
A three-dimensional Langevin equation with covariant form is applied to describe the asymmetric nuclear fission. 采用一个具有协变形式的朗之万方程组来描述不对称热核裂变。
Covariant Anomalies and General Tortoise Coordinate of Vaidya Black Hole Vaidya时空中的广义乌龟坐标变换和协变反常
The covariant equation of plane motion body in curved space-time is studied. 研究弯曲时空中平面运动刚体的动力学协变方程。
In obvious covariant theory this paradox disappears. 用明显协变的理论,使这一问题得到解决。
Completely positive maps on σ-C-algebras are studied in this paper. The covariant version of Stinespring's dilation theorem and some results are obtained. 研究了σ-C-代数上的完全正映射,获得了共变形式的Stinespring型扩张定理等一系列结果。
The general covariant expressions of energy-momentum of gravitational waves of diagonal metric are given in this paper. The longitudinal wave. transversal wave and solitary waves of gravitational field are also discussed. 给出了一般对角度规引力波广义协变的能量动量表达式,讨论了引力纵波、横波和引力孤立波的能量动量。
According to the principle of relativistic covariance, this paper presents the relativistic covariant equation of current density. 介绍这一系统的原理、构造及操作。从相对论协变性原理出发,得到了电流密度方程满足相对论协变性的自洽展开式。
This paper, taking lorentz covariant equation and retarded potential as starting point, is to discuss the motion and radiation of electron under circumstance of strong magnetic field in magnetic lager of pulsar surface. 本文从Lorentz协变方程和推迟势出发,讨论了在脉冲星表面磁层强磁场条件下电子的运动和辐射。
The transformation property of the general covariant equation under charge conjugation, space inversion, time reversal and strong reflection is studied. 本文讨论了广义协变方程在电荷共轭变换,空间反演,时间倒逆和强反射下的变换性质。
The four-dimensional momentum current density tensor of electromagnetic field is defined. Both law of the electromagnetic energy transformation and conservation and law of the electromagnetic momentum transformation and conservation are written into four-dimensional covariant form. 定义了电磁场的四维动量流密度张量,并将电磁能量转化和守恒定律及动量转化和守恒定律写成了四维协变形式。
On the Temperature Transformation of Moving Body and the Covariant Formalism of Thermodynamics law 论动体温度变换和热力学定律的协变形式
The form of Maxwell equations under three-dimension vector form is proved to be equal in different inertial systems. In other words, these equations are covariant under Lorentz transformation. 该文证明三维矢量形式的麦克斯韦方程组在不同的惯性系中具有相同的形式,即该方程组在洛仑兹变换下是协变的。
Invariant and covariant in special theory of relativity on quantity 狭义相对论中的绝对量和相对量
Go a step further, beginning with the relation of the general curvilinear coordinate system and its corresponding reciprocal base, we derived the description of the particle's motion in the reciprocal base, and the covariant components of the particle's motion were obtained as well. 进一步地,从一般曲线坐标系与其对应倒基的关系出发,导出了一般曲线坐标系对应倒基下对质点运动的描述,并进而给出了质点运动对应的协变分量。
The covariant form of the Langevin equation and the Fokker-Planck equation describing the nuclear fission process is studied. The transformations of dynamical parameters are given. 研究了描述原子核裂变过程的Langevin方程和Fokker-Planck方程的协变性,给出了动力学参数的坐标交换规律。
Application of the distribution coefficient in the research on the covariant relation of microelements 分配系数在研究微量元素协变关系中的应用
Non-staggered grid system and velocity covariant are adopted. 以速度的协变分量为求解量,采用同位网格来实现速度与压力的关联。
Use the ion trap system to design phase covariant quantum real state quantum cloning machine. 利用离子阱系统设计实现相位协变与实数态量子克隆的方案。
In this paper, this covariant form is extending to open system, in pressure circumstances, the covariant expression of the thermodynamics law is calculated. 把这种协变形式推广到开放系统,在受压情况下,导出了热力学定律的协变表达式。