spectrum n. (pl. -tra ) 1.【物理学】谱,光谱;波谱;能谱,质谱。 2.【无线电】射频频谱;无线电(信号)频谱。 3.【心理学】(眼睛的)余像;残像。 4.〔转义〕范围,幅度;(连续的)系列。 an absorption spectrum 吸收(光)谱。 a bright line spectrum 线状光谱。 an optical spectrum 光谱。 a solar spectrum 太阳光谱。 a wide spectrum of opinion 意见的不同幅度甚大。
Analysis of resolution on fourier transform spectrum 提高傅里叶变换光谱仪分辨率的一种方法
New approach to resolution enhancement of fourier transform spectrum 变换光谱学的一种光谱分辨率增强方法
Hilbert - huang transform spectrum and its application in seismic signal analysis 黄变换谱及其在地震信号分析中的应用
Formulas of inversion and cosine transform spectrum of gravity anomaly of sphere , infinite horizontal cylinder , infinite and finite stretched staircase were deduced 推导出球体、无限长水平圆柱体、无限和有限延伸垂直台阶的重力异常余弦变换谱及反演表达式。
The cosine transform spectrum of sphere are about the same as that of infinite horizontal cylinder , and that of infinite stretched staircase are very sharp , but that of finite stretched staircase presents well - regulated leap 球体与无限长水平圆柱体的余弦变换谱相似,无限延伸垂直台阶的变化很尖锐,有限台阶的表现为上、下有规律的跳跃。