空集 kōngjí empty set Definitions Defs Origin Strokes Stroke Words Sentences Sents 空集 kōngjí empty set noun empty set (set theory) Frequency Written text 0.147 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
空集 kōngjí empty set noun empty set (set theory) Frequency Written text 0.147 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
