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开口惊艳你的数学老师:符号英文如何表达?

  2x(-4)=-8,你能用英语把这个等式(equation)读出来吗?被难倒了吧!如果还有波…

  2x(-4)=-8,你能用英语把这个等式(equation)读出来吗?被难倒了吧!如果还有波形符号、立方根、函数表达等,你是不是心慌了呢?别着急!下面给你整理歪果仁如何表达各种数学符号和标点符号,看完后你马上就会说了~一起来学习吧!

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  Mathematical symbols 数学符号

  01. +: plus 加号;正号

  “1+1”读作:one plus one

  02. -: minus; negative 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 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 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

  “1<2”读作 One is less than two.

  11. >: is greater than 大于号

  “2>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. %: percent 百分之……

  “10%”读作:ten percent

  17. ‰ : per mill ; per thousand 千分之……

  “10‰”读作:ten per thousand

  18. ∞: infinity 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

  “∴1<2”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 半圆

  “⌒AB”读作:semicircle AB

  26. ⊙: circle 圆

  “⊙A”读作:circle A

  27. ○: circumference 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。

  30. ⊥: perpendicular to 垂直于

  “A⊥B”读作:A is perpendicular to B.

  31. //: parallel 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 of 交,通集

  “A∩B”读作:The intersection of A and B

  34. ∫: the integral 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 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)

  以上就是数学符号英文的表达了,你都掌握了吗?也别心急,慢慢掌握吧~如果你还想学习更多的英语口语表达,赶快来在线英语学习吧!

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