摘要：
数学符号中英文名称大全 http://www.fhdq.net/sx/18.html + plus 加号；正号- minus 减号；负号± plus or minus 正负号× is multiplied by 乘号÷ is divided by 除号＝ is equal to 等于号≠ is no 阅读全文
posted @ 2022-11-06 14:08
ingemar,fang
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