spectrum n. (pl. -tra ) 1.【物理學(xué)】譜,光譜;波譜;能譜,質(zhì)譜。 2.【無線電】射頻頻譜;無線電(信號)頻譜。 3.【心理學(xué)】(眼睛的)余像;殘像。 4.〔轉(zhuǎn)義〕范圍,幅度;(連續(xù)的)系列。 an absorption spectrum 吸收(光)譜。 a bright line spectrum 線狀光譜。 an optical spectrum 光譜。 a solar spectrum 太陽光譜。 a wide spectrum of opinion 意見的不同幅度甚大。
Analysis of resolution on fourier transform spectrum 提高傅里葉變換光譜儀分辨率的一種方法
New approach to resolution enhancement of fourier transform spectrum 變換光譜學(xué)的一種光譜分辨率增強(qiáng)方法
Hilbert - huang transform spectrum and its application in seismic signal analysis 黃變換譜及其在地震信號分析中的應(yīng)用
Formulas of inversion and cosine transform spectrum of gravity anomaly of sphere , infinite horizontal cylinder , infinite and finite stretched staircase were deduced 推導(dǎo)出球體、無限長水平圓柱體、無限和有限延伸垂直臺階的重力異常余弦變換譜及反演表達(dá)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 球體與無限長水平圓柱體的余弦變換譜相似,無限延伸垂直臺階的變化很尖銳,有限臺階的表現(xiàn)為上、下有規(guī)律的跳躍。