查询词典 differentiation

Numerical differentiation is that derivative value of a function at a certain point is approximately solved in discrete method.

中文摘要：数值微分就是用离散方法近似地求出函数在某点的导数值，关于数值微分已有许多求解方法，但这些方法都有各自的局限性，并且关于高阶导数近似逼近的方法研究相对较少。

A mathematician went insane and believed that he was the differentiation operator.

一个疯了的数学家认为自己是微分算子。

In addition, the representation of differentiation operator in wavelet bases is almost diagonal with a diagonal pre-conditioning operator.

另外微分算子在小波基下的表示具有近似对角线分布而且还存在着一个对角化预正则化算子。

The validity of staggered grid real value FFT differentiation operator is confirmed by comparing with the analytic Cagniard-De Hoop method in the half space SH problem.

将该方法和Cagniard De Hoop解析法在求解半无限空间地震波动的问题中进行比较，结果表明，新微分法的精度和解析方法的精度相同。

The Savitzky-Golay differentiator can efficiently reduce the noise amplification effect of the numerical differentiation operator in axial strain calculation of ultrasound elastography.

采用Savitzky-Golay差分器可以有效地减小超声弹性成像的纵向应变计算过程中数值微分操作对于噪声的放大作用。

A comparison with the analytic result for vertical displacement in homogeneous medium demonstrates that the staggered-grid differentiation operator almost achieves as the same accuracy as the analytic method.

在均匀介质中，将错格伪谱微分算子计算的结果和解析解进行比较，结果表明本文算子几乎达到了解析解的精度。

The validity of staggered grid real value FFT differentiation operator is confir med by comparing with the analytic CagniardDe Hoop method in the half space SH problem.

将该方法和CagniardDe Hoop解析法在求解半无限空间地震波动的问题中进行比较，结果表明，新微分法的精度和解析方法的精度相同。

According to the defect of different type in log, histogram balance, fast average filter, fast mediate filter, differentiation sharp, Laplace sharp operator, Sobel sharp operator, Kirsch sharp operator, etc.

针对原木中不同类型的缺陷，本文采用的处理方法有直方图均衡、快速均值滤波、快速中值滤波、微分锐化、拉普拉斯算子锐化、Sobel算子锐化、kirsch算子锐化等算法。

The emergence of the city is an important symbol of social differentiation has been the existence of human and material resources such as control function.

城址的出现也是社会分化的重要标志，也是对人力物力等资源支配权利的象征。

In immunohistochemistry slices of skeletal muscle injury induced by contusion, the expression conditions of MyoD protein (one molecule symbol during the differentiation of sarcoblast) in satellite cells are followings: it is expressed continuously in gastrocnemius of treated group at 24 hours、2 days and 4 days after injury positive it is expressed at 4th day in fast muscle of untreated group; it is expressed at 2th day after injury in soleus (slow muscle of treated group; it is negative in slow muscle of untreated group.

由此可见，云南白药在骨骼肌损伤后的修复过程中的作用是通过抑制炎性细胞对伤后肌肉组织的破坏作用，缩短炎症反应进程，对骨骼肌卫星细胞的增殖分化有一定的促进作用，并且该作用在快肌纤维上表现较为显著，从而有利于损伤肌组织的修复。

We have limited budget let me know if you can do this competitively.

我们有限的预算让我知道如果你能做到这一点竞争力。

We don't know how other critters breathe--lizards, for example.

我们还不知道诸如蜥蜴之类的动物如何呼吸。