数学符号英语词汇

2012-03-05 18:37:06 英语

  +  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 greater 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

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