收入差距越越大
growing income disparities
巴特渥斯趋近法
Butterworth approximation method
变速趋近律
variable rate reaching law
变指数趋近
variable exponential approach
变指数趋近律
variable exponent reaching law
variable exponential reaching law
步长压缩摆动趋近法
method of swinging approach on compressible step size
swinging approach on compressible size step
函数当x趋于x0时的极限
limit of functions as x approaches x0