| 释义 |
direct illumination
direct illuminationIllumination provided by direct light from pyrotechnics or searchlights.EncyclopediaSeeilluminationdirect illumination
di·rect il·lu·mi·na·tionan illumination in which the rays of light are directed downward, almost perpendicularly onto the upper surface of the object, which reflects the rays upward into the optical system. Synonym(s): erect illumination, vertical illuminationdirect illuminationThe illumination of an object under a microscope by directing light rays upon its upper surface.See also: illumination |