spectrum
n.系列，范围；波谱
释义2：
spectrum
/ 5spektrEm /
◙ (pl. spectra -trə)1. a band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength• 光谱 (the spectrum)the entire range of wavelengths of electromagnetic radiation• 电磁辐射波长的全部范围 an image or distribution of components of any electromagnetic radiation arranged in a progressive series according to wavelength• 电磁波谱 a similar image or distribution of components of sound, particles, etc., arranged according to such characteristics as frequency, charge, and energy• 频谱2. used to classify something, or suggest that it can be classified, in terms of its position on a scale between two extreme or opposite points• 范围 »the left or the right of the political spectrum. 政治圈里的左派和右派。 a wide range• 大范围；大幅度 »self-help books are covering a broader and broader spectrum. 指导自己动手的书籍涉及越来越广的范围。【语源】
1. early 17th cent. (in the sense 'spectre'): from Latin, literally image, apparition', from specere 'to look'
俄语/英语字母转换