& ampersandIn North America,"pound key"In some countries with British tradition,"hash key""number sign" is also used by some* asterisk,multiply,star,pointer 星号,乘号,星,指针+ 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{ open brace,open curly 左花括号} close brace,close curly 右花括号( open parenthesis,open paren 左圆括号) close parenthesis,close paren 右圆括号() brakets/ parentheses 括号[ open bracket 左方括号] close bracket 右方括号[] square brackets 方括号.period,dot 句号,点| vertical bar,vertical virgule 竖线& ampersand,and,reference,ref 和,引用/ slash,divide,oblique 斜线,斜杠,除号// slash-slash,comment 双斜线,注释符# pound 井号\ backslash,sometimes escape 反斜线转义符,有时表示转义符或续行符tilde 波浪符.full stop 句号,comma 逗号:colon 冒号; semicolon 分号question mark 问号!exclamation mark (英式英语) exclamation point (美式英语)' apostrophe 撇号- hyphen 连字号-- dash 破折号...dots/ ellipsis 省略号" single quotation marks 单引号"" double quotation marks 双引号‖ parallel 双线号& ampersand = andswung dash 代字号§ section; division 分节号→ arrow 箭号;参见号_ underscore 下划线
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