单词	维护规则
释义	维护规则maintenance regulation
随便看	diffraction symbol diffraction symmetry diffraction theory diffraction tomography diffraction traveltime curve diffraction velocimeter diffraction wave diffraction--wave diffraction wavefront diffraction-- x-ray diffraction; x-ray diffraction x-ray method diffraction x-ray method-- x-ray diffraction method diffraction x-ray method; x-ray diffraction method diffraction zone diffraction， crystal diffraction， crystalline diffraction， electron diffraction， neutron diffraction， x-ray diffractive diffractive lens diffractively diffractiveness diffractive optical element