1.It overcame the shortcoming of the hardthreshold function's discontinuousness and improves the constant error.
该阈值函数既克服了硬阈值函数不连的缺点,又修正了软阈值函数存在的恒定偏差。
2.Geological radar is a non-destructive test instrument that detect the underground objects by the quality of discontinuousness of the underground medium.