单词	磨擦石
释义	磨擦石rubbing block
随便看	diffracted beam diffracted diagram diffracted error diffracted light diffracted model diffracted ray diffracted rays diffracted reflection diffracted wave diffracted wave-- wave diffraction diffracted wave; wave diffraction diffracting diffracting crystal diffracting grating diffracting--grating diffracting mask diffracting power diffracting power of atom diffraction diffraction aberration diffractional diffraction analysis diffraction angle diffraction--angle diffraction-- bragg's law of