Network productive forces is a new category, it forms the material foundation of network economy.
网络生产力是一个全新的范畴，它构成了网络经济的物质基础。
Safety Cost science belongs to the category of technical economy.
安全成本问题属于技术经济的范畴。
National economy is a discipline in the category of applied economics of a comprehensive nature.
国民经济学是综合性较强的应用经济类专业。
National economy is a discipline in the category of applied economics of a comprehensive nature.
国民经济学是综合性较强的应用经济类专业。
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