A language construct that specifies the representation , in character form , of data objects in a file.

文件中以字符形式规定数据目标表示的一种语言结构.

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A language construct that describes a data type by means of a model character string literal.

编程语言中,利用模型字符串的数值文字描述数据类型的一种语言成分.

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A language construct that specifies an operation and identifies its operands, if any.

指出某种操作并标识其操作数(如果有操作数的话)的一种语言构造.

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