second derivative发音

意思翻译

二次导数

相似词语短语

derivative───adj.（艺术家或艺术作品）模仿的；受……影响的；（金融产品）衍生的；n.派生物；金融衍生产品；派生词；（化学）衍生物；导数

cosine derivative───余弦导数

second───adj.第二（个）的；（比赛、级别上）居第二位的；另外的；次要的；v.支持，附议；临时调派（工作人员等）；n.(Second)（美）塞孔（人名）；num.第二；（规模、质量等）居第二位的；另外的；n.秒；瞬间；第二名；二等品；adv.居第二位；第二，其次

trigonometric derivative───三角导数

derivative calculator───导数计算器

derivative action───[自]微商作用

convective derivative───n.随流导数；[流]迁移导数；传递导数

first derivative───一阶导数；一阶微商

indicated derivative───指示导数

双语使用场景

it's the second derivative of a position vector.───它是位置向量的二阶导。

So, what does the second derivative test say?───那么二阶导数判定是怎样的呢？

And all we did, further, is take that second derivative.───总而言之，我们所做的就是求二阶导数。

That is a critical point. And we used the second derivative to see that this critical point is a local maximum.───这是一个临界点，考察它的二阶导数，会发现这确实是一个极大值点。

It is unnecessary to get second derivative of target function in this algorithm, and it is simple and easy to program.───即单参数动态搜索与黄金分割混合算法，这种算法不需要求目标函数的二阶导数，算法简单，编程容易。

This paper describes a sensitive method for the determination of trace estrogen and androgen by second derivative convolution voltammetry.───二阶导数卷积伏安法应用于水稻中痕量雌雄激素的检测，具有快速、灵敏、干扰少的特点。

The computation precision can be enhanced with the consideration of second derivative.───计算结果表明，考虑二阶导数的影响，可以提高计算精度。

Moreover, there were certain differences in second derivative near-infrared spectra of the two samples.───两者薄层色谱与近红外二阶导数光谱也略有不同。

Or maybe we could perform analytic derivatives on the temperature vectors (probably second derivative to get the inflection).───或者可能我们可以对温度向量进行解析求导（analyticderivatives，要得到形变可能需要进行二次求导）。

英语使用场景

By first and second derivative of velocity function from growth process of logistic curve, the yielding points displaying the variety of curve were obtained and compared.

Perhaps it could be large if the second derivative of f is small, and viceversa.

Bar code recognition is a matter of edge detection, which has long been done through the maximum value of the first derivative or zero crossing of the second derivative.

So, it's the second derivative of a position vector.

Diphenhydramine hydrochloride and ephedrine hydrochloride in diphenhydramine and ephedrine nasal drops are determined by second derivative spectrophotometry.

The determination of clobetasol propionate by the method of second derivative linear sweep adsorptive stripping voltammetry was reported.

Perhaps it could be large if the second derivative of f is small, and viceversa. Hill climbing has several limitations.

The time rate of change of concentration is proportional to the second derivative of concentration.

Two edge detection operators of second derivative model, the discrete Laplacian of Gaussian (DLOG) and Laplacian of binomial distribution (LOB) operators are introduced in this paper.