一阶差分法 meaning in Chinese

first difference method
method of first differences

Several key technology is particular expatiated in the paper such as eliminating the queer data by one rank difference method , the arithmetic of drawing a roundness with lattice liquid crystal , designing the iir digital filter , auto changing measure scale and software dependability design technique
本文详细阐述了几个关键技术：一阶差分法剔除奇异项，点阵液晶的作圆算法、 iir数字滤波器的设计、自动量程转换和系统的软件可靠性设计等。