查询词典 error coefficient

The paper analyses two kinds of new formulas on the equivalent friction coefficient of V-belt drive in the present mechanical design and finds out that one is reasonable but has certain error and the other is wrong.

对现行机械设计中关于V带传动当量摩擦系数的2种计算公式进行分析。认为其中一种公式是合理的，但存在一定的误差；而另一种公式却是错误的。通过推导V带欧拉公式，给出了计算V带传动当量摩擦系数的准确公式，并在公式中引入了一个新的参数——摩擦力方向角。在考虑皮带拉力变化既有径向滑动又有周向滑动的前提下，改进后的计算公式比现有公式更加完善

This paper first studies the varying coefficient model by Hastie and Tibshirani(1993), and establishes unknown function coefficients and variance error estimator, and discusses asymptotic properties of estimators.

本文首先研究了Hastie和Tibshirani(1993)提出的变系数模型，运用小波方法建立了未知系数函数以及模型误差方差的估计量，并讨论了这些估计量的渐近性质。

Therefore, the authors suggested that a coefficient of correction for correcting height index measurement error should be established when the height is measured in the afternoon, so as to enhance measurement efficiency and measurement objectivity.

青少年身高在一日中发生变化，因此，在下午测量时，为了提高测试效率及测量的客观性，建议制定修正身高指标测量误差的系数。

If this is summed into the inverting input of the error amplifier, a negative temperature coefficient results at the output.

如果这是总结到误差放大器，一个负温度系数的结果相输入输出。

Based on the Lagrange interior ballistics and the velocity parse result, each parameter coefficient expression and velocity error expression were presented through theory deduction.

基于拉格朗日假定的内弹道模型，从炮口速度的解析解出发，通过理论推导，给出了影响炮口速度参量敏感系数的理论表达式和综合表达式。

The effect of the magnetic interference on the output of magnetic compass was analyzed and a ellipse model for the compass deviation was established. By analysis on the singularity of a coefficient matrix, the error coefficients of the ellipse model were identified by the least square ellipse fitting method.

分析了外界磁干扰对磁罗盘输出的影响，建立了罗差的椭圆模型，通过对系数矩阵的奇异性进行分析，采用最小二乘方法实现了对椭圆模型误差系数的辨识。

This text has done a summary to PSD first , then introduce the structure , operation principle and characteristic of PSD, PSD position sensor experimental provision and measuring the circuit, study size , to enlarge size , mid point position of coefficient choose measurement range , sensitivity , non-linear influence of error in PSD circuit of luminous point emphatically.

本文先对PSD做了一个概述，然后介绍了PSD的结构、工作原理及特性，PSD位置传感器实验装置及检测电路，着重研究了光点的大小、电路的放大系数的大小、中点位置的选取对PSD的测量范围、灵敏度、非线性误差的影响。

The coefficient of multiple correlation was from 0.653~0.218 and the standard error of estimate was between 4.59~6.68cm.

回归方程的复相关系数在0.653~0.218范围内，身高估计值标准误在4.59~6.68cm范围。

Establish the steady-state and transient model using the three hydrodynamics equations (Continuity equation, Momentum equation and Energy equation). By comparing different state equation, it selects the BWRS state equation which is considered the most accurate state equation in current natural gas measurement. It calculates compression factor, density and other Thermal parameters based on BWRS state equation. In Numerical solution of the steady-state and transient model, compression factor, friction coefficient and all the other Thermal parameters are recalculated in each small time step to reduce the numerical calculation error.

在稳态模型的建立上，利用流体力学三大方程(连续性方程、运动方程和能量方程)，通过比较不同的状态方程选用了目前被认为最精确的用于天然气计量的BWRS状态方程，并以此方程为基础进行压缩因子、密度等热物性参数的计算；在稳态模型的求解上，选用容易计算，精度较高的标准型龙格—库塔(Runge-Kutta)法进行数值求解，并且在迭代过程的每一小步都重新计算燃气的压缩因子，摩阻系数等所有的计算参数，以减少数值计算的误差。

This paper studied a filtering high order numerical method for one dimension constant coefficient hy2 perbolic function. The stability and error analysis show the efficiency of this method. Numerical examples are also given to verify the analysis results.

摘 要 考虑一维常系数双曲型方程的高阶数值解法，引进了一种稳定性过滤算子FN ，最后从理论和数值实验上分析了该过滤算子对数值解稳定性和精度的影响。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。