尹明善的代表，杨洲，力帆的首席执行官陪同黄振东对巴西进行了访问。
Mr. Yin's deputy, Yang Jong, Lifan's chief executive, has accompanied Mr. Huang on a visit to Brazil.
黄明利。岩石多裂纹相互作用破坏机制的研究[D]。沈阳： 东 北大学资源与土木工程学院， 2000。
HUANG Ming-li. Research on fracture mechanism by of interaction of multi2crack in brittle rock[D]. Shenyang: School of Resources and Civil Engineering, Northeastern University, 2000.
黄明利。岩石多裂纹相互作用破坏机制的研究[D]。沈阳： 东 北大学资源与土木工程学院， 2000。
HUANG Ming-li. Research on fracture mechanism by of interaction of multi2crack in brittle rock[D]. Shenyang: School of Resources and Civil Engineering, Northeastern University, 2000.
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