Pronunciation of Symbols in English
+ plus 加号;positive 正的 - minus 减号;negative 负的± plus or minus 正负号 * is multiplied by 乘号÷ is divided by 除号 = is equal to 等于号 > is more than 大于号 < is less than 小于号 ≤ is less than or equal to 小于或等于号 ≥ is more than or equal to 大于或等于号 ≮ is not less than 不小于号 ≯ is not more than 不大于号 ≠ 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
, comma 逗号 . period, dot 句号,点 : colon 冒号 ; semicolon 分号 # pound 井号 - hyphen 连字号 _ underscore 下划线 ~ tilde 波浪符 -- dash 破折号 ... dots/ ellipsis 省略号 ? question mark 问号 ! exclamation mark (英式英语) exclamation point (美式英语) " single quotation marks 单引号 "" double quotation marks 双引号 / slash, divide, oblique 斜线,斜杠,除号 // slash-slash, comment 双斜线,注释符 / virgule 斜线号 | vertical bar, vertical virgule 竖线 ‖ parallel 双线号& ampersand, and, reference, ref 和,引用 \ backslash, sometimes escape 反斜线转义符,有时表示转义符或续行符 ' apostrophe 省略号,英文中省略字符用的撇号;所有格符号(men's room)~ swung dash 代字号 § section; division 分节号 → arrow 箭号;参见号
{ open brace, open curly 左花括号 } close brace, close curly 右花括号 {} braces 中括号( 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 《 》 French quotes 法文引号;书名号
% per cent 百分之… ‰ per mill 千分之… ∶ ditto 双点号¨ tandem colon 双点号
′ minute 分 〃 second 秒 ° degree 度 ℃ Celsius system 摄氏度
∞ infinity 无限大号 ∝ varies as 与…成比例 ∵ since; because 因为 ∴ hence 所以 ∷ equals, as (proportion) 等于,成比例
√ (square) root 平方根 ∠ 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
LognX logx to the base n f(x) the function of x dx diffrencial of x x+y x plus y (a+b) bracket a plus b bracket closed a=b a equals b a≠b a isn’t equal to b a>b a is greater than b a>>b a is much greater than b a≥b a is greater than or equal to b x→∞ x approches infinity x2 x square x3 x cube xn the nth power of x √ ̄x the square root of x 3√ ̄x the cube root of x n√ ̄x the nth root of x 6 % 6 percent 3‰ 3 per mille 3‰ three peimill n∑i=1xi the summation of x where x goes from 1to n n∏i=1xi the product of x sub i where igoes from 1to n ∫ab integral betweens a and b >> is approximately equal to2:3 the ratio of two to three D x or d x the increment of x dy/dx the first derivative of y with respect to x 1/2 a half; one half 2/3 two thirds 5/123 five over a hundred and twenty-three 0.01 O point O one; zero point zero one; nought point nought one r=xd r equals x multiplied by d 5* 2=10 five times two equals ten x3/8=y2 x raised to the third power divided by eight equals y squared (a+b-c* d)/e=f a plus b minus c multiplied by d all divided by e equals fy = (Wt-W)/x y equals W sub t minus W over x
Α α Alpha /ˈælfə/Β β Alpha /ˈbeɪtə/Γ γ Gamma /ˈdɛltə/Δ δ Delta /ˈdɛltə/Ε ε Epsilon /ˈɛpsɨlɒn/Ζ ζ Zeta /ˈzeɪtə/Η η Eta /ˈeɪtə/Θ θ Theta /ˈθeɪtə/Ι ι Iota /aɪˈoʊtə/Κ κ Kappa /ˈkæpə/Λ λ Lambda /ˈlæmdə/Μ μ Mu /ˈmuː/Ν ν Nu /ˈnuː/Ξ ξ Xi /ˈksaɪ/Ο ο Omicron /ˈɒmɨkrɒn/Π π Pi /ˈpaɪ/Ρ ρ Rho /ˈroʊ/Σ σ Sigma /ˈsɪɡmə/Τ τ Tau /ˈtaʊ/,/ˈtɔː/Υ υ Upsilon /ˈʌpsɨlɒn/Φ φ Phi /ˈfaɪ/Χ χ Chi /ˈkaɪ/Ψ ψ Psi PsiΩ ω Omega /oʊˈmeɪɡə/