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| 1 | “Steiner trees” between cell walls of sisal显示文摘Through careful analysis on the cross-section of sisal fibers, it is found that the middle lamellae between the cell walls have clear geometric characteristics: between the cell walls of three neighboring cells, the middle lamellae form a three-way junction with 120° symmetry. If the neighboring three-way junctions are connected, a network of Steiner tree with angular symmetry and topological invariability is formed. If more and more Steiner trees are connected, a network of Steiner rings is generated. In another word, idealized cell walls and the middle lamellae are dominated by the Steiner geometry. This geometry not only depicts the geometric symmetry, the topological invariability and minimal property of the middle lamellae, but also controls the mechanics of sisal fibers. | LI GuanShi YIN YaJun LI Yan ZHONG Zheng | 2009 | Chinese Science Bulletin2009，54，18： | 1 |
| 2 | 畜产品供应链品牌体系创建与运营的分析显示文摘本文基于对畜产品供应链品牌体系创建与运营的系统认识、机理和影响因素的分析,运用推理演绎、系统分析、决策分析、创新思想等方法,分析、设计、梳理畜产品供应链品牌体系创建与运营的常规流程,明确其过程中需要解决的关键问题。同时提出针对性策略以建立流程标准体系,有效提高畜产品供应链的整体竞争力和品牌影响力,提高风险防控能力,为畜产品供应链品牌体系创建与运营提供策略支撑。 | 陈喜辉 王刚毅 孙玉婷 | 2015 | 中国畜牧杂志2015，51，14： | 1 |
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