data distribution function three-dimensional near infrared spectrum three dimensional NIR spectrum 3D NIR spectrum three-dimensional NIR spectrum three dimensional near infrared spectra three-dimensional near infra-red spectra three dimensional NIR spectra 3D near infra-red spectra 3-dimensional near infra-red spectra 3-dimensional near infra-red spectrum 3D near infrared (NIR) spectra 3-dimensional near infrared (NIR) spectrum three dimensional near infra-red spectra 3-dimensional near infrared spectra 3D NIR spectra three dimensional near infrared (NIR) spectrum 3D near infra-red spectrum three-dimensional near infrared (NIR) spectra A three-dimensional near infrared spectrum is a data distribution function that is a plot of absorbance or transmittance versus wavelength and versus time obtained by measuring the amount of radiation absorbed by a sample as a function of the wavelength of incident radiation from the near infrared region (0.8-2 µm) and as a function of time. [Allotrope] 3-dimensional near infrared (NIR) spectra 3D near infrared (NIR) spectrum 3D near infrared spectra three dimensional near infra-red spectrum three-dimensional near infrared spectra three-dimensional near infrared spectrum three-dimensional near infrared (NIR) spectrum 3-dimensional NIR spectrum three-dimensional near infra-red spectrum three-dimensional NIR spectra three dimensional near infrared (NIR) spectra 3-dimensional NIR spectra