“加减乘除”及各种符号标点的英文表达.pdf

加减乘除”及各种符号标点的英文表达 数学符号 Mathematical symbols 01 + plus 加号；正号 “1+1”读作：one plus one 02 － minus ['maɪnəs]; negative ['negətɪv] 减号；负号 “2-1”读作：two minus one “-3”读作：minus three 或 negative three “2-(-3)”读作：two minus negative three 03 ± plus-minus sign 正负号 “±1” 读作：plus or minus one 04 × multiplied [’mʌltɪ’plaɪd] by ; times 乘号 “2×3” 读作：two multiplied by three 或 two times three 05 ÷ divided by 除号 “4÷2”读作：four divided by two 06 = equals; is equal to 等于号 “1+1=2”读作：One plus one equals two. 或 One plus one is equal to two. 07 ≠ is not equal to 不等于号 “a≠b”读作：a is not equal to b 08 ≌ congruent ['kɒŋgrʊənt] to 全等（两个图形形状相同、大小相等） “△ABC≌△DEF”读作：Triangle ABC is congruent to Triangle DEF. 09 ≈ approximately equal to 约等于号 “3×3≈10” 读作：Three multiplied by three is approximately equal to ten. 10 1”读作：Two is greater than one. 12 ≮ is not less than 不小于号 “3≮2”读作：Three is not less than two. 13 ≯ is not greater than 不大于号 “2≯4” 读作：Two is not greater than four. 14 ≤ is less than or equal to 小于或等于号 “2≤3”读作：Two is less than or equal to three. 15 ≥ is greater than or equal to 大于或等于号 “5≥4”读作：Five is greater than or equal to four. 16 % per cent 百分之…… “10%”读作：ten percent 17 ‰ per mill [mil]; per thousand千分之…… “10‰”读作：ten per thousand 18 ∞ infinity [ɪn'fɪnɪtɪ] 无限大号 “－∞” 读作：negative infinity 19 ∝ varies as 与.成比例 “X∝Y”读作：X varies as Y 20 √￣ square root 平方根 “√￣16=4”读作：The square root of sixteen is four. 21 3√￣ cube root 立方根 “3√￣27=3”读作：The cube root of 27 is 3. 22 ∵ since; because 因为 “∵1+1=2”读作：because one plus one equals two 23 ∴ hence; therefore 所以 “∴12”读作：hence one is less than two 24 ∠ angle 角 “∠A”读作：angle A “∠A +∠B+∠C=180°” 读作：The measure of angle A plus angle B plus angle C equals 180 degrees. 25 ⌒ semicircle ['semɪsɜːkl] 半圆 “⌒AB”读作：semicircle AB 26 ⊙ circle 圆 “⊙A”读作：circle A 27 ○ circumference [sə'kʌmf(ə)r(ə)ns] 圆周 “○=π×d”读作：Pi multiplied by d equals circumference. 28 π pi constant 圆周率 “π×d”读作：pi multiplied by d 29 △ triangle 三角形 “△ABC”读作：triangle ABC What is the area of triangle ABC? 求三角形 ABC 的面积面积。

30 ⊥ perpendicular to [,pɜːp(ə)n'dɪkjʊlə] 垂直于 “A⊥B”读作：A is perpendicular to B. 31 // parallel ['pærəlel] to 平行于 Line AB is parallel to line CD. 32 ∪ union of 并，合集 “A∪B”读作：the union of A and B 33 ∩ intersection [ɪntə'sekʃ(ə)n] of 交，通集 “A∩B”读作：The intersection of A and B 34 ∫ the integral [ˈɪntɪɡrəl] of ……的积分 “∫x”读作：the integral of x 35 ∑ summation of 总和 “∑x”读作：the summation of x 36 equation [ɪ'kweɪʒ(ə)n] 方程式、等式 “y = kx” 读作： Y varies as x. K is “the constant of variation. y 与 x 成正比（y 是 x 的正比函数），k 是常数。

“y = k/x”读作： Y varies inversely as x. y 与 x 成反比例（y 是 x 的反比例函数） 标点符号 Punctuation marks ° degree 度 ′ minute 分 ″ second 秒 ℃ Celsius [ˈselsiəs] degree 摄氏度 º F Fahrenheit ['fær(ə)nhaɪt] degree 华氏度 @ at sign { } curly brackets 波形括号 [ ] square brackets 方括号 （） parentheses [pəˈrenθəsɪs] ; brackets [ˈbrækɪt]; round brackets 括号 ( open parenthesis 左括号 ) close parenthesis 右括号 . point/dot 点 | vertical bar; vertical virgule['vɜ:gju:l] 竖线 and; reference; ref 和，引用 * asterisk ['æstərɪsk], multiply, star, pointer 星号，乘号，星，指针 / slash; divide; oblique; stroke; solidus 斜线，斜杠，除号 // slash-slash; comment 双斜线，注释符 # number sign; pound sign; hash 井号 \ backslash 反斜线转义符 ~ tilde[ˈtɪldə] 波浪符 . full stop; period 句号 , comma 逗号 : colon 冒号 ; semicolon 分号 ? question mark 问号 ! exclamation[ˌekskləˈmeɪʃn] mark 惊叹号 ' apostrophe[əˈpɒstrəfi] 撇号、所有格符号 - hyphen ['haɪf(ə)n] 连字号 － dash 破折号 _ underscore; understrike 下划线 . ellipsis [ɪˈlɪpsɪs] 省略号 ‘’ single quotation marks 单引号 “” double quotation marks 双引号 ” Ditto Sign 如上所述 ‖ parallel 双线号 〜 swung dash 代字号 § section sign; division 分节号 → arrow 箭号；参见号 。