常用英文符号与含义对照表
本文整理了编程、数学及日常写作中常用的英文符号，提供中英文名称对照，方便查阅。
数学运算符号
| 符号 | 英文名称 | 中文含义 |
|---|---|---|
| + | 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 |
| ≌ | equal to or approximately equal to | 等于或约等于号 |
| ≈ | is approximately equal to | 约等于号 |
| ＜ | less than | 小于号 |
| ＞ | more than | 大于号 |
| ≮ | not less than | 不小于号 |
| ≯ | not more than | 不大于号 |
| ≤ | less than or equal to | 小于或等于号 |
| ≥ | 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 |
几何与空间符号
| 符号 | 英文名称 | 中文含义 |
|---|---|---|
| √ | (square) root | 平方根 |
| ∠ | angle | 角 |
| ⌒ | semicircle | 半圆 |