各种数学符号的英文读法
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x’ 读作 x prime x'’ 读作 x double prime or x second prime x’’’ 读作 x triple prime 点:dot /: slash. \: backslash Punctuation marks apostrophe ( ' ) ( ’ ) brackets ( ( ) ) ( [ ] ) ( { } ) ( 〈 〉 ) colon ( : ) comma ( , ) dashes ( ‒ ) ( – ) ( — ) ( — ) ellipsis ( … ) ( ... ) exclamation mark ( ! ) full stop/period ( . ) hyphen ( - ) ( ‐ ) interrobang ( ‽ ) question mark ( ? ) quotation marks ( ‘ ’ ) ( “ ” ) semicolon ( ; ) slash/solidus ( / ) space ( ) and interpunct ( • )
Other typographer's marks ampersand ( & ) asterisk ( * ) and asterism ( ⁂ ) at ( @ ) backslash ( \ ) bullet ( •, more ) dagger ( † ‡ ) degrees ( ° ) number sign ( # ) prime ( ′ ) tilde ( ~ ) underscore ( _ ) vertical bar/pipe ( | ) + 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 * asterisk, multiply, star, pointer 星号,乘号,星,指针 / 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 = and ~ swung dash 代字号 § section; division 分节号 → arrow 箭号;参见号
符号的英文读法 . period 句号 ≈ is approximately equal to 约等于号 , comma 逗号 < is less than 小于号 : colon 冒号 > is more than 大于号 ; semicolon 分号 ≮ is not less than 不小于号 ! exclamation 惊叹号 ≯ is not more than 不大于号 question mark 问号 ≤ is less than or equal to 小于或等于号  ̄ hyphen 连字符 ≥ is more than or equal to 大于或等于号 ' apostrophe 省略号 ;所有格符号 % per cent 百分之… - dash 破折号 ‰ per mill 千分之… ' ' single quotation marks 单引号 ∞ infinity 无限大号 double quotation marks 双引号 ∝ varies as 与…成比例 ( ) parentheses 圆括号 √ (square) root 平方根 [ ] square brackets 方括号 ∵ since; because 因为 《 》 French quotes 法文引号;书名号 ∴ hence 所以 ... ellipsis 省略号 ∷ equals, as (proportion) 等于,成比例 ¨ tandem colon 双点号 ∠ angle 角 ditto 双点号 ⌒ semicircle 半圆 ‖ parallel 双线号 ⊙ circle 圆 / virgule 斜线号 ○ circumference 圆周 & ampersand = and π pi 圆周率 ~ swung dash 代字号 △ triangle 三角形 § section; division 分节号 ⊥ perpendicular to 垂直于 → arrow 箭号;参见号 ∪ union of 并,合集 + plus 加号;正号 ∩ intersection of 交,通集 - minus 减号;负号 ∫ the integral of …的积分 ± plus or minus 正负号 ( ∑ sigma) summation of 总和 × is multiplied by 乘号 ° degree 度 ÷ is divided by 除号 ′ minute 分 = is equal to 等于号 ″ second 秒 ≠ is not equal to 不等于号 # number …号 ≡ is equivalent to 全等于号 ℃ Celsius system 摄氏度 ≌ is equal to or approximately equal to 等于或约等于号 @ at 单价
R’ R prime R” R double prime, R second prime R1 R sub one 100° C one hundred degrees Centigrade + plus; positive - minus; negative ´ multiplied by; times ¸ divided by ± plus or minus = is equal to; equals º is identically equal to » is approximately equal to ( ) round brackets; parentheses [ ] square brackets { } braces a>>b a is much greater than b a³ b a is greater than or equal to b aµ b a varies directly as b lognX logX to the base n the cubic root of x the nth root of x x2 x square, x squared, the square of x Xn X to n factors; the nth power of x; x to the power n x -8 x to the minus eighth power ï xï the absolute value of x the mean value of X the sum of the terms indicated; summation of D x or d x the increment of x dx differential x
dy/dx the first derivative of y with respect to x ò integral ¥ infinity