“packsand”的概念、定义、翻译、参考文献-科学参考

单词	packsand
释义	packsand [`pak´sand] ^PETROLOGY A very fine-grained sandstone that is so loosely consolidated by a slight calcareous cement that it can be readily cut by a spade.
随便看	Ophioglossales Ophioglossidae ophiolite ophiolitic eclogite Ophiomyxidae Ophiomyxina ophiopluteus ophite ophitic Ophiurida Ophiuroidea ophryon ophthalmectomy ophthalmia ophthalmia neonatorum ophthalmia nodosa ophthalmic ophthalmic nerve ophthalmodynamometer ophthalmological ophthalmologist ophthalmology ophthalmomalacia ophthalmometer ophthalmorrhexis

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