“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 is less than 小于号 “12”读作 One is less than two. 11 is greater than 大于号 “21”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 [ɪnfɪnɪtɪ] 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