数学符号英文对照

＋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 not equal to                  不等于号

≈is approximately equal to        约等于号
＜is less than                     小于号

＞is more than                     大于

≤is less than or equal to         小于或等于号

≥is more than or equal to         大于或等于号
％per cent                         百分之…

‰per mill                         千分之…
∝varies as                      与…成比例
∷equals, as (proportion)          等于，成比例
∠angle                            角

⌒semicircle                      半圆
⊙circle                           圆

○circumference                   圆周
π pi                            圆周率

△triangle                         三角形
⊥perpendicular to                 垂直于

°degree                           度
′minute                           分

″second                           秒
＃number …                        号

℃Celsius system                 摄氏度
＠at                              单价