noun🔗Share原子单位，原子单位制。 Abbreviation of atomic units."The scientist's calculations used au for the units of length. "那位科学家的计算中，长度单位使用了原子单位制。physicsunitChat with AIVocabulary GamePractice Reading
noun🔗Share吸收单位 Abbreviation of absorbance units."The spectrophotometer reading showed the sample had an absorbance of 0.5 AU. "分光光度计读数显示，该样品的吸光度为0.5个吸收单位。chemistrybiochemistryscienceunitChat with AIVocabulary GamePractice Reading
