spectrum
(复数:spectra)
(1)谱
(2)光谱
(3)频谱
(4)波谱
(5)能谱

• rectangular aperture
• rectangular axis
• rectangular Cartesian coordinate
• rectangular coordinate
• rectangular coordinate system
• rectangular disk laser
• rectangular filter
• rectangular guideway
• rectangular hyperbola
• rectangular laser
• rectangular mirror
• rectangular prism
• rectangular wave
• rectangular wave grating
• rectification
• rectifier
• CIE
• CIE 1931 standard colorimetric system
• CIE 1964 supplementary standard colorimetric system
• CIE llluminant
• C.I.E photometric scale
• cilia
• ciliary muscle
• cine
• cineangiography