| 释义 |
far-infrared radiation
far-in·fra·red radiation (fär′ĭn′frə-rĕd′)n. Abbr. FIR Electromagnetic radiation having the longest wavelengths in the infrared region, often between 15 and 1,000 micrometers. Also called far-red radiation.far-infrared radiation
far-infrared radiation[¦fär in·frə′red ‚rād·ē′ā·shən] (electromagnetism) Infrared radiation the wavelengths of which are the longest of those in the infrared region, about 50-1000 micrometers; requires diffraction gratings for spectroscopic analysis. far-infrared radiation
far-infrared radiation (fär′ĭn′frə-rĕd′)n. Abbr. FIR Electromagnetic radiation having the longest wavelengths in the infrared region, often between 15 and 1,000 micrometers. Also called far-red radiation. |