Read Edit View history 定义域 dìngyìyù domain Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 定义域/定義域 · dìngyìyù · domain 2026/03/04 定义域 / 定義域 dìngyìyù domain domain (mathematics) 函数 f(x) 的定义域是所有实数。 noun created sense Mar 4, 2026, 02:25 AM