查询词典 numerical constant

We see that there is no numerical value of the real constant.

我们可见实常数没有数值。

The article introduces a design method of numerical precision constant current source based on high-power operational amplifier .

介绍了一种在大功率运放 OPA549基础上的数控精密恒流源设计方法。

A quantity which has a fixed numerical value is called a constant.

1\一个量它有固定的数值，这个量叫作常量。

Numerical analyses indicate that high-precision constant flow control can be obtained by using linear helical spring.

数值结果表明，利用线性螺旋弹簧可以实现平衡阀的高精度恒流量控制。

It consists of:(1) numerical filtering of both constant and variable parameters;(2) techniques of measuring group velocities by using "moving window" and "multiple filtering";(3) cross-correlation method of measuring phase velocities.

包括：(1)参数固定的和可变的数值滤波；(2)测定群速度的"移动窗"和"多重滤波"技术；(3)测定相速度的互相关法。

According to the results of numerical simulation, the rate constant of BQI hydrolysis k 1 is calculated from the intercept of the line.

以x与最大吸光度Amax所对应的体积流量qVm作图，它满足lgqVm对lg(-4.45+4.72x/xe)是一条斜率接近1的直线。

Based on an investigation on the conditions and mechanisms of superplastic forming,the numerical simulation of constant strain rate superplastic bulging under different temperature and strain rate of AZ31 magnesium alloy heart-shaped part was analyzed with the finite element analysis software MSC.

在超塑成形条件和超塑成形机理基础上，采用有限元分析软件MSC.MARC对AZ31镁合金薄板心形件，在不同成形温度和应变速率条件下的恒应变速率超塑气胀成形过程进行了数值模拟分析。

The author successfully applies the Gauss-type integral formula to the numerical solution to the constant differential equation and creates the Gauss-type implicit Runge-Kutta Method of which the accuracy of order 4 and degree 7 is already equivalent to that of the RK method with order 10 and degree 8 that is in common use.

成功地将高斯型求积公式用于常微分方程的数值解中，得到了高斯型隐式龙格库塔方法，4级7阶 GRK 法的精度已与目前较为常用的10级8阶 RK 法的精度相当。

The fidelities of quantum states of system in Jaynes-Cammings model considering the dissipation of cavity were studied by using the complete quantum theory.The influences of the cavity damping constant and the numerical value of initial mean photon number on the fidelities of quantum states was discussed.

利用全量子理论研究了存在腔耗散的大失谐 Jaynes-Cumming 模型中量子态保真度，讨论了初始平均光子数一定的情况下腔的耗散系数对量子态保真度的影响，以及当腔的耗散一定的情况下初始光场的平均光子数对量子态保真度的影响。

This paper instructed the numerical control DC constant current source which makes use of the AT89C51 version single chip microcontroller is the main controller in this system, while the set value and the real output current can be displayed by LED.

本文介绍了采用AT89C51单片机为主控制器，通过键盘来设置直流恒流源的输出电流，并由数码管显示电流设定值的数控直流恒流源。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。