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说的各种数学符号和标点符号的
英文表达,看完后你马上就会说了!

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:tenperthousand

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.
213√ ̄: 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:Themeasureof 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.
28π: 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 isperpendicular 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:theunionof 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
36equation 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)。
Punctuation marks标点符号
°degree 度

minute 分
second 秒
Celsius degree 摄氏度
Fahrenheit degree 华氏度
@at sign
{ }curly brackets 波形括号
[ ]square brackets 方括号
( )parentheses ; brackets; round brackets 括号
( openparenthesis 左括号
) close parenthesis 右括号
.point/dot 点
|verticalbar; vertical virgule 竖线
&ampersand; and; reference; ref 和,引用
*asterisk, 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 波浪符

full stop;period 句号
,comma 逗号
:colon 冒号
;semicolon 分号
?question mark 问号
!exclamationmark 惊叹号
'apostrophe 撇号、所有格符号
-hyphen 连字号
dash 破折号

_underscore; understrike下划线
...ellipsis 省略号

‘’single quotation marks 单引号
“”double quotationmarks 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