位场垂向二次导数是基于拉氏方程求得的。
The Second vertical derivative of the potential field is obtained from Lapace's equation.
基本上，答案就是，我们不可以用二次导数来验证这个情况。
Basically, the answer for us is that we don't have a second derivative test in this situation.
这里有一个测试的方法，但是它比二次导数复杂多了。
There is a criterion but it is much more complicated than that.
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。
The second derivative curve of the gravity field can be used as filtering factor so as to improve resolution.
经过化极垂向一次导数和垂向二次导数的验证，吻合很好，说明浅部异常的可信度高。
The checks by the vertical first derivative and second derivative anomalies reduced to the pole show good coincidence, which proves the reliability of the shallow layer anomaly.
重力异常四次导数和重力异常二次导数一样，具有突出局部异常，压制区域异常的作用。
As the second derivative does, the forth, derivative of gravity anomaly projects local anomaly but suppresses regional anomaly.
方法采用水平梯度法和二次垂直导数等方法提取微弱信息，利用数字图象显示技术成图。
The horizontal gradient anomalies and two derivatives methods are adopted to extract faint information as well as other methods, and digital image display technique is used to show the results.
根据有理函数及其导数性质，用微分法把有理函数分解为部分分式的和，给出了一次因式所对应的部分分式各系数和二次质因式前两对系数的计算公式。
Raised the differential method of resolving rational function into fractions, and formulas were suggested of the coefficients which correspond to liner factor and quadratic prime factor.
本文采用两种方法来解决高温温区的外推标定问题，即基于二次曲线的导数最小二乘法和基于修正指数模型的趋势外推法。
One is differential least square method based on conic, and the other method is trend extrapolation based on modified exponential model.
本文采用两种方法来解决高温温区的外推标定问题，即基于二次曲线的导数最小二乘法和基于修正指数模型的趋势外推法。
One is differential least square method based on conic, and the other method is trend extrapolation based on modified exponential model.
应用推荐