aphanite
基礎(chǔ)科學

        Definition: Aphanite,or aphanitic as an adjective,is a name given to certain igneous rockswhich are so fine grained that their component mineral crystals are not detected by the unaidedeye (as opposed to phaneritic igneous rocks,where the minerals are vis......（本文共 1083 字）     [閱讀本文] >>