查询词典 approximate partial derivative

First derivative combined with standard normal variate was used to pretreat spectra, and calibration model for ginsenosides had been built by partial least squares regression method.

标准正则变换结合一阶导数对光谱进行预处理后，采用偏最小二乘回归算法建立在线测量总皂苷浓度的近红外光谱校正模型。

The NIRS quantitative analysis model was developed for measuring MBM content in fish meal by using partial least squares. The initial spectrum was pretreated by standard normalized variate, 7 point smoothind and one derivative respectively.

应用偏最小二乘定标方法，在8 678.10~4 250.34cm^(-1)波数范围内，采用变量标准化、7点平滑和一阶导数对光谱进行预处理，建立了鱼粉中肉骨粉含量的NIRS定量分析模型。

Similarly, the partial derivative of with respect to at ,and is denoted by

类似地，在关于的偏导数，记作，由

It is difficult to get partial derivative in least square fitting method,and the problem was avoided by usi...

利用遗传算法实现了产出曲线的自动拟合，避免了最小二乘法中求偏导数困难的问题，提高了求解的速度和精度。

The partial derivative of f with respect to x keeping r and z fixed.

函数f对x的偏微分，r和z保持不变。

The partial derivative of f with respect to x, keeping y, and z fixed.

函数f对x的偏微分，固定y和z。

Also this paper demonstrates that numerical method could calculate partial derivative of complex function to linearize adjustment model.

同时表明，采用数值方法可计算复杂函数的偏导数，以满足线性化平差模型的需要

We also give the matrix forms of the interface partial derivative with multiple complex interfaces.

给出了任意多个复杂界面情况下，反演时所需的走时对界面偏导数系数矩阵。

No mistaken took place for the second derivative spectra using partial least square method.

研究不同建模方法在西瓜品质指标检测中的建模与预测效果。

Finally, optical flow estimation is performed based on the least square method and partial derivative estimation.

然后通过最小二乘法并结合图像的偏导数进行光流场估计。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。