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[期刊论文] 作者：Haijun CAO,
来源：数学研究及应用：英文版 年份：2016
We give the definition of G-inner action of two semilattice graded weak Hopf algebras with the same semilattice Y, and the necessary and sufficient conditions f...
[期刊论文] 作者：Haijun CAO,Mianmian ZHANG,
来源：黑龙江科技学院学报 年份：2015
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
Analytical solutions of hard roofs bending moment, deflection and energy under the front abutment pr
[期刊论文] 作者：Jiang Haijun,Cao Shenggen,Zhan,
来源：矿业科学技术学报：英文版 年份：2016
The distribution of front abutment pressure is closely related to the force,deformation and energy distribution of hard roof before periodic weighting. So it is...
[期刊论文] 作者：Jiang Haijun,Cao Shenggen,Zhang Yun,Wang Chen,,
来源：International Journal of Mining Science and Technology 年份：2016
The distribution of front abutment pressure is closely related to the force,deformation and energy distribution of hard roof before periodic weighting. So it is...
[期刊论文] 作者：Wang Yunni,Xiong Wei,Wang Yanhui,Yu Pengtao,Xu Lihong,Zuo Haijun,Cao Gongxiang,Sun Hao,,
来源：Chinese Forestry Science and Technology 年份：2012
The tree specie selection is the critical part in the process of vegetation restoration and reconstruction in arid and semi-arid areas.As a reliable indicator o...
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