[数学] minus sign; sign of subtraction; subtraction sign减,减号: minus减号;负号: -minus减号键: substract key【数学】(有加减号的)有向数。: directed number减耗作用;消融(冰河): wastage下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:减号,即可在微信中查询翻译