数学符号中英文名称大全

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+  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 equivalent to 全等于号
    ≌ is equal to or approximately equal to 等于或约等于号
    ≈ is approximately equal to 约等于号
    < is less than 小于号
    > is more than 大于号
    ≮ is not less than 不小于号
    ≯ is not more than 不大于号
    ≤ 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…
    ∞ infinity 无限大号
    ∝ varies as 与…成比例
    √ (square) root 平方根
    ∵ since; because 因为
    ∴ hence 所以
    ∷ 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
    ∪ union of 并,合集
    ∩ intersection of 交,通集
    ∫ the integral of …的积分
    ∑ (sigma) summation of 总和
    ° degree 度
    ′ minute 分
    ″ second 秒
    ℃ Celsius system 摄氏度

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