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It is normally read aloud as "at" and is also commonly called the at symbol, commercial at, or address sign. The absence of a single English word for the symbol has prompted some writers to use the French arobase [2] or Spanish and Portuguese arroba , or to coin new words such as ampersat [3] and asperand , [4] or the (visual) onomatopoeia strudel , [5] but none of these have achieved wide use.
A symbol is a mark, sign, or word that indicates, signifies, or is understood as representing an idea, object, or relationship. Symbols allow people to go beyond what is known or seen by creating linkages between otherwise very different concepts and experiences.
The greater than or equal to symbol is used in math to express the relationship between two math expressions. Typically, the symbol is used in an expression like this: a ≥ b. In plain language, this expression represents that the variable a is greater than or equal to the variable b.
The less than or equal to symbol is used in math to express the relationship between two quantities or as a boolean logical operator. Typically, the symbol is used in an expression like this: a ≤ b. In plain language, this means that the variable a is less than or equal to the variable b. The less than or equal symbol is used in math to ...
symbol 是一种基本数据类型（primitive data type）。Symbol() 函数会返回 symbol 类型的值，该类型具有静态属性和静态方法。它的静态属性会暴露几个内建的成员对象；它的静态方法会暴露全局的 symbol 注册，且类似于内建对象类，但作为构造函数来说它并不完整，因为它不支持语法："new Symbol()"。
Symbol Text. Typographer. Whitespace. Emoji Keyboard. Flip. Unicode Character Table Generator. Character Calculator. Password Generator ( ‿ ) SYMBL. All images of emoji and characters on the website are for informational purposes, the rights belong to their authors and cannot be used for commercial purposes without their consent.
Plus–minus sign. The plus–minus sign, ±, is a symbol with multiple meanings: In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction. In statistics and experimental sciences, the sign commonly indicates the confidence interval or uncertainty ...
