数学符号英语词汇及表达

【数学符号英语词汇及表达】
+  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 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
√ (square) root 平方根

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