“Ordovician”的概念、定义、翻译、参考文献-科学参考

单词	Ordovician
释义	Ordovician [´ȯrd·ǝ`vish·ǝn] ^GEOLOGY The second period of the Paleozoic era, above the Cambrian and below the Silurian, from approximately 500 million to 440 million years ago.
随便看	grandrelle yarn grand unified field theory granellare granite granite cloth granite-gneiss granite moss granite pegmatite granite porphyry granite series granite wash granitic batholith granitic layer granitic magma granitization granoblastic fabric granodiorite granofels granogabbro granophyre Grantiidae granular granular-bed separator granular component granular fracture

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