英语词汇“pennsylvanian periods”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	pennsylvanian periods
释义	pennsylvanian periods 原型:pennsylvanian periods 是 pennsylvanian period 的复数 [网络]宾夕凡尼亚纪；三亿年前 (pennsylvanian period 的复数)
随便看	spectra,fluorescence spectragraphics spectragraphicss spectrahedra spectrahedral spectrahedron spectra in alpha decay spectral spectral absorbance (of a homogeneous non-diffusing layer) spectral absorptance spectral absorption spectral absorption curve spectral absorption factor spectral absorption index spectral absorption method spectral absorptivity spectral acceleration spectral actinometer spectral action spectral-adaptive plastic colors spectral adaptometer spectral albedo spectral amplitude spectral amplitude coding spectral amplitude technique

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