最密堆积 zuìmìduījī close-packing Origin Definitions Defs Strokes Stroke Words Sentences Sents 六方最密堆积 liùfāngzuìmìduījī hexagonal close-packed hexagonal close-packed (HCP) structure面心立方最密堆积 miànxīnlìfāngzuìmìduījī face-centered cubic face-centered cubic (FCC) packing