Probing into essential factors of productive forces is the beginning of the research on productive forces economics.

生产力要素的探讨是生产力系统、生产力经济学研究的起点。

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Probing into essential factors of productive forces is the beginning of the research on productive forces economics.

生产力要素的探讨是生产力系统、生产力经济学研究的起点。

youdao