数学符号的英语说法
下面这些符号大家都很熟悉,但你能用英文说出来吗?
+ plus 加号;正号
+ plus 加号;正号
+ plus 加号;正号
× 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
∫ the integral of ……的积分