特殊符号的英文读法
＜ is less than
＞ is more than
≮ is not less than  
≯ is not more than
≤ 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,英文中省略字符用的撇号;所有格符号
％ percent
－ dash 破折号
‰ per mille
∞ infinity 无限大号
∝ varies as 与…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 角
∶ ditto 双点号
⌒ semicircle 半圆
‖ parallel 双线号
⊙ circle 圆
／ virgule 斜线号  
○ circumference 圆周
～ 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
∩ intersection of 交，通集  
∫ the integral of …的积分
± plus or minus 正负号
∑ summation of 总和
× is multiplied by 乘号
° degree 度
÷ is divided by 除号  
′ minute 分
″ second 秒
≠ is not equal to 不等于号  
≡ is equivalent to 全等于号  
℃ Celsius degree 摄氏度
≌ is equal to or approximately equal to 等于或约等于号


计算机编成常用符号英语读音
` backquote 反引号
~ tilde
! exclam
@ at
# numbersign,英语国家是hash，美语是pound,音乐里作sharp,如C#
$ dollar
% percent
^ caret
& ampersand
* asterisk,star(美语),数学公式中作multiply
( parenleft,opening parentheses
) parenright,closing paretheses
- minus;hyphen连字符,不读
_ underscore
+ plus
= equal
[ bracketleft,opening bracket
] bracketright,closing bracket
{ braceleft
} braceright
; semicolon
: colon
' quote
" doublequote
/ slash
\ backslash 反斜杠
| bar
, comma
< less
> greater
. period
? question
   space 空格