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
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