“Middle Ordovician”的概念、定义、翻译、参考文献-科学参考

单词	Middle Ordovician
释义	Middle Ordovician [`mid·ǝl ´ȯr·dǝ`vish·ǝn] ^GEOLOGY The geologic epoch occurring between the Upper and Lower Ordovician, beginning approximately 460,000,000 years ago.
随便看	acoustic fatigue acoustic feedback acoustic filter acoustic fix acoustic generator acoustic grating acoustic heat engine acoustic hologram acoustic homing acoustic horn acoustic image acoustic imaging acoustic impedance acoustic inertance acoustic insulation acoustic intensity acoustic interferometer acoustic jamming acoustic labyrinth acoustic lens acoustic levitation acoustic line acoustic line of position acoustic logging acoustic Mach meter

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