名词

1. 光谱
The spectrum is the range of different colours which is produced when light passes through a glass prism or through a drop of water. A rainbow shows the colours in the spectrum.

2. 系列;范围
A spectrum is a range of a particular type of thing.

3. 波谱(如光波波谱、无线电波波谱等)
A spectrum is a range of light waves or radio waves within particular frequencies.

1. a broad range of related objects or values or qualities or ideas or activities

2. an ordered array of the components of an emission or wave