Green barrier can bring environment credit and make agricultural products of advanced countries have differential advantage.
绿色壁垒还能够带来环境信誉,环境信誉使发达国家的农产品形成差异化优势。
The environment worsens day by day, the green trade barrier is its realistic basis.
而环境日益恶化、绿色贸易壁垒是其现实依据。
Extinction probabilities for the single birth chain in Marko-vian environment with an absorption barrier 0.
求出了0为吸收壁的马氏环境中单生链的灭绝概率。
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