iffraction grating 衍射光栅 ; 衍射光珊

iffraction mottling 衍射斑点

X -ray D iffraction 射线衍射仪

iffraction limited 衍射极限

iffraction ring 衍射环

iffraction chart 绕射图

iffraction principles 衍射原理

iffraction X-ray spectrometer 非衍射X射线光谱仪