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符号的读法(重要-Final one)  

2007-04-12 22:58:40|  分类: 默认分类 |  标签: |举报 |字号 订阅

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period 句号
≈ is approximately equal to
约等于号
comma 逗号
is less than 小于号
colon 冒号
is more than 大于号
semicolon 分号
is not less than 不小于号
exclamation 惊叹号
is not more than 不大于号
question mark 问号
≤ is less than or equal to
小于或等于号
hyphen 连字符
≥ is more than or equal to
大于或等于号
' apostrophe
省略号
;所有格符号
per cent 百分之
- dash
破折号
‰ per mill
千分之
' ' single quotation marks
单引号
∞ infinity
无限大号
double quotation marks
双引号
varies as 成比例
( ) parentheses
圆括号
√ (square) root
平方根
[ ] square brackets
方括号
since; because 因为
French quotes 法文引号;书名号
hence 所以
... ellipsis
省略号
equals, as (proportion) 等于,成比例
¨ tandem colon
双点号
angle
ditto
双点号
semicircle 半圆
parallel 双线号
circle
virgule 斜线号
○ circumference
圆周
ampersand = and
π pi
圆周率
swung dash 代字号
triangle 三角形
§ section; division
分节号
perpendicular to 垂直于
→ arrow
箭号;参见号
union of 并,合集
plus 加号;正号
∩ intersection of
交,通集
minus 减号;负号
∫ the integral of …
的积分
± plus or minus
正负号
( ∑ sigma) summation of
总和
× is multiplied by
乘号
° degree

÷ is divided by
除号
′ minute

is equal to 等于号
″ second

≠ is not equal to
不等于号
number …
≡ is equivalent to
全等于号
Celsius system 摄氏度
is equal to or approximately equal to 等于或约等于号
at 单价

 

R’ R prime
R” R double prime, R second prime
R1 R sub one
100° C one hundred degrees Centigrade
+ plus; positive
- minus; negative
? multiplied by; times
? divided by
± plus or minus
= is equal to; equals
? is identically equal to
? is approximately equal to
( ) round brackets; parentheses
[ ] square brackets
{ } braces
a
>>
b a is much greater than b
a? b a is greater than or equal to b
a? b a varies directly as b
lognX logX to the base n
the cubic root of x
the nth root of x
x2 x square, x squared, the square of x
Xn X to n factors; the nth power of x; x to the power n
x -8 x to the minus eighth power
? x? the absolute value of x
the mean value of X
the sum of the terms indicated; summation of
D x or d x the increment of x
dx differential x
dy/dx the first derivative of y with respect to x
ò integral
? infinity
1/2 a half; one half
2/3 two thirds
5/123 five over a hundred and twenty-three
eight and three over fourths; eight and three quarters
0.01 O point O one; zero point zero one; naught point naught one
6 % 6 percent
3‰ 3 per mille
2 : 3 the ratio of two to three
r=xd r equals x multiplied by d
5? 2=10 five times two equals ten
x3/8=y2 x raised to the third power divided by eight equals y squared
(a+b-c? d)/e=f a plus b minus c multiplied by d, all divided by e equals f
y = (Wt-W)/x y equals W sub t minus W over x

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