cmn: 回折格子

Information
has URI	http://lexvo.org/id/term/cmn/%E5%9B%9E%E6%8A%98%E6%A0%BC%E5%AD%90
character	Character U+56DE
character	Character U+6298
character	Character U+683C
character	Character U+5B50

Meaning
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means	(noun) optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum grating, diffraction grating