grating constant grating floor grating front beam grating monochromator grating reflector grating spectra grating spectrograph grating spectrometer grating spectrum grating structure gratuitous service grave gravel gravel ballast gravel car gravel concrete gravel filter gravel ground gravelling gravelly |
grating constant решетъчна константа константа на кристална решетка Търсената дума е намерена |