Read Edit View history 子域 zǐyù subfield Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 子域 · zǐyù · subfield 2026/03/04 子域 zǐyù subfield subfield (math.) 有理数集是实数集的一个子域。 noun created sense Mar 4, 2026, 02:25 AM