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英文中各種符號(hào)標(biāo)點(diǎn)都怎么說(shuō)?

中國(guó)日?qǐng)?bào)網(wǎng)雙語(yǔ)新聞微信 2016-02-24 13:40

 

2x(-4)=-8

你能用英語(yǔ)把這個(gè)等式(equation)讀出來(lái)嗎?

被難倒了吧!

別著急!看完下面雙語(yǔ)君給你整理的各種數(shù)學(xué)符號(hào)和標(biāo)點(diǎn)符號(hào)的英文表達(dá),你馬上就會(huì)說(shuō)了!

英文中各種符號(hào)標(biāo)點(diǎn)都怎么說(shuō)?

數(shù)學(xué)符號(hào)
Mathematical symbols

01

+: plus 加號(hào);正號(hào)

“1+1”讀作:one plus one

02

-: minus; negative 減號(hào);負(fù)號(hào)

“2-1”讀作:two minus one

“-3”讀作:minus three或negative three

“2-(-3)”讀作:two minus negative three

03

±: plus-minus sign 正負(fù)號(hào)

“±1” 讀作:plus or minus one

04

×: multiplied by ; times 乘號(hào)

“2×3” 讀作:two multiplied by three 或 two times three

05

÷: divided by 除號(hào)

“4÷2”讀作:four divided by two

06

=: equals; is equal to 等于號(hào)

“1+1=2”讀作:One plus one equals two.

或 One plus one is equal to two.

07

≠: is not equal to 不等于號(hào)

“a≠b”讀作:a is not equal to b

08

≌: congruent to 全等(兩個(gè)圖形形狀相同、大小相等)

“△ABC≌△DEF”讀作:Triangle ABC is congruent to Triangle DEF.

09

≈: approximately equal to 約等于號(hào)

“3×3≈10” 讀作:Three multiplied by three is approximately equal to ten.

10

<: is less than 小于號(hào)

“1<2”讀作 One is less than two.

11

>: is greater than 大于號(hào)

“2>1”讀作:Two is greater than one.

12

≮: is not less than 不小于號(hào)

“3≮2”讀作:Three is not less than two.

13

≯: is not greater than 不大于號(hào)

“2≯4” 讀作:Two is not greater than four.

14

≤: is less than or equal to 小于或等于號(hào)

“2≤3”讀作:Two is less than or equal to three.

15

≥: is greater than or equal to 大于或等于號(hào)

“5≥4”讀作:Five is greater than or equal to four.

16

%: percent 百分之……

“10%”讀作:ten percent

17

‰ : per mill ; per thousand 千分之……

“10‰”讀作:ten per thousand

18

∞: infinity 無(wú)限大號(hào)

“-∞” 讀作:negative infinity

19

∝: varies as 與...成比例

“X∝Y”讀作:X varies as Y

20

√ ̄: square root 平方根

“√ ̄16=4”讀作:The square root of sixteen is four.

21

3√ ̄: cube root 立方根

“3√ ̄27=3”讀作:The cube root of 27 is 3.

22

∵: since; because 因?yàn)?/p>

“∵1+1=2”讀作:because one plus one equals two

23

∴: hence; therefore 所以

“∴1<2”讀作:hence one is less than two

24

∠: angle 角

“∠A”讀作:angle A

“∠A +∠B+∠C=180°”

讀作:The measure of angle A plus angle B plus angle C equals 180 degrees.

25

⌒: semicircle 半圓

“⌒AB”讀作:semicircle AB

26

⊙: circle 圓

“⊙A”讀作:circle A

27

○: circumference 圓周

“○=π×d”讀作:Pi multiplied by d equals circumference.

28

π: pi constant 圓周率

“π×d”讀作:pi multiplied by d

29

△: triangle 三角形

“△ABC”讀作:triangle ABC

What is the area of triangle ABC? 求三角形ABC的面積。

30

⊥: perpendicular to 垂直于

“A⊥B”讀作: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”讀作:the union of A and B

33

∩: intersection of 交,通集

“A∩B”讀作:The intersection of A and B

34

∫: the integral of ……的積分

“∫x”讀作:the integral of x

35

∑: summation of 總和

“∑x”讀作:the summation of x

36

equation 方程式、等式

“y = kx” 讀作:

Y varies as x.

K is "the constant of variation.

y與x成正比(y是x的正比函數(shù)),k是常數(shù)。

“y = k/x”讀作:

Y varies inversely as x.

y與x成反比例(y是x的反比例函數(shù))。

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