“sphenopterids”的概念、定义、翻译、参考文献-科学参考

单词	sphenopterids
释义	sphenopterids Encyclopedia 理学古植物学释 sphenopterids楔羊齿类晚古生代以小羽片基部为楔形或者柄状为形态特征划分的植物类群，部分为真蕨类植物，其他则为种子蕨类植物。
随便看	modulation depth modulation distortion modulation domain analyzer modulation doped field effect transistor modulation-doped field effect transistor modulation-doped field-effect transistor modulation-doped field-effect transistor, MODFET modulation doping modulation effect modulation envelope modulation formats in optical communications modulation index modulation instability modulation interferometer modulation interferometry modulation measurement modulation mode modulation phase modulation spectroscopy modulation technique modulation theorem Modulation Transfer Function modulation transfer function modulation transfer function compensation modulation transfer function，MTF

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