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点,又修正了软阈值函数存在恒定偏差。

Geological radar is a non-destructive test instrument that detect the underground objects by the quality of discontinuousness of the underground medium.

质达是一种通过利用介质不连性来探目标无损检工具。