1) light absorption
光的吸收
3) praseodymium absorption spectra
镨(Ⅲ)的吸收光谱
4) Absorption spectra of U(Ⅴ)
铀(Ⅴ)的吸收光谱
5) light absorption and scattering
光的吸收与散射
6) absorption and stimulation of light
光的吸收与发射