black pattern paper的意思|示意

The environmental pollution of black liquor would be solved and a new pattern of virtuous cycle was set up between paper industry and farming.

从根本上消除草浆生产黑液的污染问题，建立起造纸工业和农业之间物质良性循环新模式。

The paper studies organic mineral complex component and distribution character of organic carbon of black soil under various cultivation pattern.

研究了不同耕作方式下黑土有机无机复合体组成及有机碳在各级复合体中的分布特征。