数学符号英语词汇

+ 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