spectrum characteristics的用法和样例：
例句
- This FPI is suitable for wavelength measurement and laser spectrum observation, especially for short submillimeter wave range.
适宜用作亚毫米波波长的测量和频谱特性的研究。 - 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.
本文用傅里叶级数的方法分析了合成波形的频谱特性，并对由于相位截断引起的杂散谱作了讨论。
