1718, "capable of seeing spectres;" 1815, "ghostly;" from spectre + -al (1). Meaning "pertaining to a spectrum" is 1832, from stem of spectrum + -al (1). Related: Spectrally.
雙語例句
1. She is compelling, spectral, fascinating, an unforgettably unique performer.
她極具吸引力，清幽如鬼魅，令人著迷，令人難忘，是個(gè)獨(dú)具特色的演員。
來自辭典例句
2. The origins of stars of differing spectral types must be dissimilar.
不同光譜型星的起源必然是不一樣的.
來自辭典例句
3. The spectral sensitivity of various cells is very different.
各種光電管的分光靈敏度是很不相同的.
來自辭典例句
4. Colour filters are not very effective in isolating narrow spectral bands.
一些濾色片不能很有效地分離狹窄的光譜帶.
來自辭典例句
5. Total radiation instruments employ some broad spectral band sensors.