数值差分、符号微分 diff
数值差分计算 Numerical difference calculation ; Differential calculated values ; Numerical finite difference method
数值差分、标记微分 diff
数值积分误差 numerical integration error
调频数值链差分 differential using fm data link
有限差分数值算法 Finity difference numberical algorithm
有限差分数值模拟 finite difference numerical simulation
为在压气机整机进入深度失速前检测到失速起始信号，提出了一种基于平均数值差分的短周期扰动检测方法。
To detect stall inception signal before the whole compressor running into deep rotating stall, a method based on averaged numerical difference is developed to detect short length scale disturbance.
通过对电阻率测深数据作数值差分处理，使区域场受到压制而局部场得到突出，并且多个相互叠加的异常也得到分离，有利于解释推断。
To process data of resistivity sounding by numeric difference method will separate all anomalies and it will be beneficial to interpretation and inference.
对动态数学校型的数值求解，试验了两种颇为有效的方法，并将这两种方法和常用的有限差分方法作了比较。
In solving the mathematical model, two time-saving and effective numerical methods have been tested and compared with the finite difference method commonly used.
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