查询词典 variable

The concepts of variable, function and their application are the kernels of algebra abstract thought.

变量和函数的观念及其运用又是代数抽象思维中最核心的部分。

For there is no concrete mathematical expression to describe its complicate inner working process and theoretical calculation, and the movement of piston is a kind of nonlinear variable accelerated motion, we have to resort to computer technique to do theoretical research work.

油压夯管锤是高能量输出的油压马达，其工作性质是建立在流体力学、液压传动、运动学、动力学、机械学、波动力学等多学科基础上的流体机械，其内部工作过程和理论计算比较复杂，没有显示的数学表达式，而活塞的运动又是一种非线性的变加速的运动过程，因而，其理论研究必须借助电子计算机。

This generator is based on acceptance-rejection technique, however, in theory, when the number of rectangle preponderates over 255, the acceptance probability is higher than 99.1%, with 98% of the time the required random variable is produced simply by doing a multiplication.

该算法基于接受－拒绝抽样技术，理论分析表明当矩形数大于255个时，该算法的抽样效率大于99.1%，而且98%以上的时间内仅需进行一次简单的乘法运算。

Keywords: BP neural networks,model approximation degree, acceptance probability, variable stepsize learning algorithm

数值结果表明该算法不仅明显地提高了BP网络的学习收敛速度，而且在一定程度上还能避免陷入局部极小。

BP neural networks ; model approximation degree ; acceptance probability ; variable stepsize learning algorithm

数值结果表明该算法不仅明显地提高了BP网络的学习收敛速度，而且在一定程度上还能避免陷入局部极小。

For improving the accurateness of theoretic analysis, a space variable method based on wave optics is presented.

为了提高理论分析的准确性，提出一种建立在波动光学基础上的空间变分析法，详细说明了形成新月形的空间变过程，并用计算机模拟出不同屈光度的近视眼瞳孔像及其沿子午方向的光强分布。

Because the thermal properties of materials are time-depandent,it's possible to increase the accurateness of numerical simulation with the variable thermal properties.

由于材料的物性参数是随着温度时刻变化，采用变物性参数可进一步缩小模拟结果与实际间的差异。

The method of designing binary optical element is proposed to realize Achromatic Optical Variable Device.

提出了一种实现消色散光变图像的二元光学方法。

The acquirement of incomplete knowledge is key to adapt variable incomplete information environment.

不完全知识的获取是适应非全息环境变化的关键。

The workflow is only for demonstrative purposes, the only code action is updating the status variable when the states change.

工作流仅用于示范目的，唯一的代码更新操作时的状态变量的状态变化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。