A use case is neither a class specification nor a data specification.
用例既不是类规范，也不是数据规范。
As one might expect, the report specification is a property of the report class.
因此可以猜想得到，报告规范是报告类的一个属性。
Description of material including material specification, type/grade/class, normal size and material identification applicable.
材料说明包括材料规格、型号/等级/类别、标称尺寸和适用的材料识别号。
The report specification is a property of this class.
reportspecification是该类的一个属性。
The report specification is a property of this class.
reportspecification是该类的一个属性。
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