spectrum characteristic的用法和樣例：
例句
- This FPI is suitable for wavelength measurement and laser spectrum observation, especially for short submillimeter wave range.
適宜用作亞毫米波波長(cháng)的測量和頻譜特性的研究。 - This paper analyzes the spectral characteristic of the synthesized waveform by use of the Fourier Series,and discusses the spurious spectrum of the phase truncation errors.
本文用傅里葉級數的方法分析了合成波形的頻譜特性，并對由于相位截斷引起的雜散譜作了討論。
