cjfd 中文意思是什麼
cjfd
解釋
cnki中國期刊全文數據庫-
Teaching experience of practice course of cjfd
實習課教學體會 -
The occurrence of the coalbed methane ( cbm ) papers written by chinese authors front 1994 to 2005 was system atically indexed and analyzed from the cnki ' s china journal full database ( cjfd )
摘要基於cnki中國期刊全文數據庫，系統檢索和統計了我國煤層氣論文的分佈特點。
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