phase information extraction 基本例句 相位信息提取 Based on the principle of the double hemicycle diffraction, by giving each of them different discrepancy, the phase can be detected with the diffraction patterns.摘要基于双半圆孔衍射的基本原理，通过对其两部分分别施加不同的相位，利用衍射图样，进行了相位信息提取研究。