The practical value of knowledge resources possesses popularity , duality of exhaustiveness and non exhaustiveness, and expansivity.
知识资源的使用价值具有广普性、非耗竭与耗竭二重性及扩张性.
The practical value of knowledge resources possesses popularity, duality of exhaustiveness and non exhaustiveness, and expansivity.
知识资源的使用价值具有广普性、非耗竭与耗竭二重性及扩张性;
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