1. spectral norm：spectral multiplicity 谱重度 | spectral norm 谱模 | spectral point 谱点
1. 谱模的翻译
1. 通过用双谱分析曲轴轴承振动信号，在双谱模域内进行搜索，得到了信号的特征频率面。
By bispectral analyzing of the vibration data and searching the field of bispectral modulus, characteristic planes in data were found out.
2. 谱模在线翻译
2. 谱模（英文）关于二级光谱问题的探讨
Spectral Modules On the secondary spectrum