英语释义

1. the derivative of the derivative of a function

片语

second order derivative titration二阶导数滴定

second order derivative uv二阶导数

second time derivative二阶时间导数

second order derivative term二阶导数项

second order derivative spectrum二阶导数谱

second order derivative osillopolarography二阶导数示波极谱法

second-derivative spectra二阶导数光谱法

second d derivative二阶导数

second partial derivative二阶偏导数

英汉例句

• 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。

• basically, the answer for us is that we don「t have a second derivative test in this situation.

  基本上，答案就是,我们不可以用二次导数来验证这个情况。

• 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。

• so, using those, now, what happens if we take the second derivative of a, the mixed derivative, partial with respect to t and the partial with respect to v.

  如果我取a的二阶导数,混合导数，对t偏微分,再对v偏微分。

• and the point is that the second derivative of a, with respect to v and t in this order is the same as the second derivative of a with respect to t and v in this order.

  问题的关键在于a的二阶导数，对v和t以这样一个顺序求导,和对t和v以这样一个顺序,求导是一样的。

• the second derivative curve of the gravity field can be used as filtering factor so as to improve resolution.

  为了提高分辨率，可采用重力场的二次导数曲线作滤波因子。

• we cannot use the second derivative test.

  这里不能用二次导数来验证。

• so, it」s the second derivative of a position vector.

  它是位置向量的二阶导。

• i wish i were your second derivative so i could fill your concavities.

  我希望我是你的另一个衍生物，那么我就可以填充你的凹陷了。

• according to curves curvature and curves second derivative value, the geometrical characteristics of the fitting curves was summed up.

  通过计算得出拟合曲线的曲率值和二阶导数值并绘制了曲率值图和二阶导数值图。

• and this, you will recognize is the first derivative of velocity versus time which is also the second derivative of position versus time.

  这点想必诸位已经了然于胸,它就是速度对,时间的一阶导数,也是位置对,时间的二阶导。

• wxx if i take the second derivative with respect to x and x so first i want to take maybe the derivative with respect to x wx but first, let's take the first partial, wx that will be 2ax by, right?

  如果我要求二阶偏导数,首先要求关于x的一阶偏导数,让我们首先求出,它等于2ax+by，对吧？

• so the first thing i have to do, i have to find what the second derivative is of x as a function of time.

  因此我首先要做的，就是发现，x关于时间的函数的,二次导数。

• but when it comes to the second derivative you have to see how alpha is changing.

  然而对于二阶导数,就得看α的变化规律了。

• the second derivative of rats′serum fluorescence spectrum was analyzed to obtained spectral properties during the process of liver fibrosis.

  分析了白鼠肝纤维化病变过程中血清荧光光谱的二阶导数光谱。

• we cannot use second derivative tests or anything like that.

  我们不可以用2阶导数来观察或者别的什么方法。

• according to fitted curves curvature and fitted curves second derivative value, the geometrical characteristics of the fitted curves was summed up.

  通过计算得出拟合曲线的曲率和二阶导数并绘制了曲率图和二阶导数图。