core - In fiber optics, the center part of an optical waveguide through which light passes. In single-mode fiber, the core diameter is 8 to 12 microns, whereas in multimode fiber, the diameter may range up to 100 microns. ;
дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://www.hansenmedia.com/;
