单词	故障频谱
释义	故障频谱 fault spectrum
随便看	Preschool or infant school education preschool PE pre-school pedagogical institute preschool pedagogy pre-school pedagogy preschoolers pre-schoolers preschoolers with hearing impairment pre-school examination period preschool period pre-school period preschool personality development pre-school physical education preschool playgroup pre-school playgroup pre -school playgroup preschool psychology preschool Refraction preschools pre-schools Preschool Science Education preschool special education preschool special education facilities preschool stage preschool teacher