要注意的是#在电话上读作pound key, 是英磅符号的意思，*读作star key。而在键盘上#读作numbersign，*读作asterisk,在音乐里#读作sharp.
参考网站：http://en.wikipedia.org/wiki/Number_sign
'exclam'＝'!'
'at'＝'@'
'numbersign'＝'#'
'dollar'＝'$'
'percent'＝'%'
'caret'＝'^'
'ampersand'＝'&'
'asterisk'＝'*'
'parenleft'＝'('
'parenright'＝')'
'minus'＝'-'
'underscore'＝'_'
'equal'＝'='
'plus'＝'+'
'bracketleft'＝'['
'braceleft'＝'{'
'bracketright'＝']'
'braceright'＝'}'
'semicolon'＝';'
'colon'＝':'
'quote'＝'''
'doublequote'＝'"'
'backquote'＝'''
'tilde'＝'~'
'backslash'＝'/'
'bar'＝'|'
'comma'＝','
'less'＝'<'
'period'＝'.'
'greater'＝'>'
'slash'＝'/'
'question'＝'?'
'space'＝' '
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￣ hyphen 连字符
' apostrophe 省略号；所有格符号
— dash 破折号
‘ ’single quotation marks 单引号
“ ”double quotation marks 双引号
( ) parentheses 圆括号
[ ] square brackets 方括号
Angle bracket
{} Brace
《 》French quotes 法文引号；书名号
... ellipsis 省略号
¨ tandem colon 双点号
" ditto 同上
‖ parallel 双线号
／ virgule 斜线号
＆ ampersand = and
～ swung dash 代字号
§ section; division 分节号
→ arrow 箭号；参见号
＋ plus 加号；正号
－ minus 减号；负号
± plus or minus 正负号
× is multiplied by 乘号
÷ is divided by 除号
＝ is equal to 等于号
≠ is not equal to 不等于号
≡ is equivalent to 全等于号
≌ is equal to or approximately equal to 等于或约等于号
≈ is approximately equal to 约等于号
＜ is less than 小于号
＞ is more than 大于号
≮ is not less than 不小于号
≯ is not more than 不大于号
≤ is less than or equal to 小于或等于号
≥ is more than or equal to 大于或等于号
％ per cent 百分之…
‰ per mill 千分之…
∞ infinity 无限大号
∝ varies as 与…成比例
√ (square) root 平方根
∵ since; because 因为
∴ hence 所以
∷ equals, as (proportion) 等于，成比例
∠ angle 角
⌒ semicircle 半圆
⊙ circle 圆
○ circumference 圆周
π pi 圆周率
△ triangle 三角形
⊥ perpendicular to 垂直于
∪ union of 并，合集
∩ intersection of 交，通集
∫ the integral of …的积分
∑ (sigma) summation of 总和
° degree 度
′ minute 分
〃 second 秒
＃ number …号
℃ Celsius system 摄氏度
＠ at 单价
x'是x prime(比如转置矩阵)
x"是x double-prime</DIV>
/:backslash
/:slash
":Double quote quotes
;:semicolon
(:left brace
):right brace
#:Sharp
$:dollar
@:at
&:and
,:comma
::colon
|:bar
{:open curly brace / left curly bracket
}:closing curly brace / right curly bracket
[:left square bracket
]:right square bracket
?:question mark
.:dot
>:greater than
=:equal sign
*:asterisk
%:percent sign
!:exclamation mark
/:slash
":Double quote quotes
;:semicolon
(:left brace
):right brace
#:Sharp
$:dollar
@:at
&:and
,:comma
::colon
|:bar
{:open curly brace / left curly bracket
}:closing curly brace / right curly bracket
[:left square bracket
]:right square bracket
?:question mark
.:dot
>:greater than
=:equal sign
*:asterisk
%:percent sign
!:exclamation mark