短语词组短语x -ray diffraction patterns 射线衍射图X -ray diffraction analysis 射线衍射分析;射线衍射方法;射线衍射法;衍射分析glancing X -ray diffraction 掠射X射线衍射Soft X -ray diffraction 软X光衍射Crystal X -ray diffraction 晶体X射线衍射 返回 X-ray diffraction