1) vertical second derivative of gravity
重力垂向二次导数
2) second derivative gravity anomaly
重力二次导数异常
3) vertical second derivative
垂向二阶导数
1.
It is a new method that calculates vertical second derivative of gravity anomalies based on discrete cosine transform(DCT).
基于离散余弦变换(DCT,Discrete Cosine Transform)的重力异常垂向二阶导数的计算方法,是笔者提出的新方法。
2.
It is a new method that calculate vertical second derivative of gravity anomalies based on discrete cosine transform(DCT).
基于离散余弦变换(DCT)的重力异常垂向二阶导数的计算方法是笔者提出的新方法。
4) gravitational vertical derivative
引力垂向导数
1.
Since the gravitational vertical derivative is useful for geodesy and geophysics.
鉴于引力垂向导数在大地测量、地球物理中广泛应用，在许多情况下，异常体就是或接近于规则形体，为此推导、引入了球体、半球体、柱体、锥体和长方体的引力垂向导数公式。
5) Gravity vertical
重力垂向
6) vertical derivative
垂向导数
1.
The vertical derivatives are widely used in processing and interpretation of potential field data,the conventional space domain formulas of calculating vertical derivatives are mostly based on Taylor series which do inevitably bring the truncation error,and are inconvenient to get higher-order derivatives.
垂向导数广泛应用于位场数据处理和解释中,常规的空间域求导公式多以台劳级数为基础,这不可避免会引入截断误差,且不便于求取高阶导数。
补充资料：法向导数
法向导数
nonnal derivative
法向导数【川n招日山滋..e;肋pM幼曰aa“po.3“0汉“明j 定义在一流形的邻域中(或定义在一带边流形上)的函数在此流形(或在流形边界)的法线(加m以1)方向上的导数(由巧论石佬).Jl.月.K邓pa。取B撰齐民友译
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