A new method is proposed to detect the edge through modulating scanning laser beam and picking up the phase reversal of the detection signal as the edge signal.

讨论了一种新的边缘检测方法，即对扫描激光束进行调制，并利用调制信号的相位突变提取边缘信号。

youdao

The designed widthwise edge curve will be used as a directix curve to form scoop surface of the energy-saving down-cut rotary blade by scanning method.

所设计的正切刃口曲线将作为曲导线用于构造下切式节能旋耕刀正切刃面。

youdao