Read Edit View history 正负号 zhèngfùhào plus-minus sign Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 正负号/正負號 · zhèngfùhào · plus-minus sign 2026/03/04 正负号 / 正負號 zhèngfùhào plus-minus sign (math.) plus or minus sign; ± 在计算平方根时，通常要考艚正负号。 created sense Mar 4, 2026, 02:25 AM