对下游石油市场供应链改进的研究 study spots downstream supply-chain improvements
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例句与用法
A smooth change of bow direction can only be successful if there is no excess bow pressure on the string at the moment of the bow change 在换弓的那一刻,如果没有弓子对弦多余的压力,换弓才能做到顺畅。
The study on suspen - dome was just started in recently several years and there were no comprehensively and deeply research achievements in our country 近几年我国对弦支穹顶结构的研究刚刚起步,在理论方面还没有全面、深入的研究成果。
The influence of some design parameters , such as density of net , rise - span ratio , height of strut , prestressing tension of cable , are analyzed , some economical and reasonable optimized parameters were gotten 分析了网格密度、矢跨比、撑杆长度、钢索预应力值等设计参数对弦支穹顶各项性能指标的影响,得到了经济合理的设计参数取值范围。
The brown - york quasilocal energies of some black holes in string theory are calculated and martinez ' s conjecture , originally proposed for the kerr black hole in general relativity , is explored in string theory 本文用brown - york准定域能定义对弦理论中的一些黑洞的能量进行了计算,并探讨了源于广义相对论中kerr黑洞的martinez猜测在弦理论中的适用性。
Some systemic and deep research work on the theory of suspen - dome is carried out in this thesis . based on reading many literatures , developmental history and present situation of suspen - dome are described , and project applications are introduced in this thesis 首先,在大量查阅国内外文献的基础上,对弦支穹顶结构的发展历史和现状进行了描述,并扼要的介绍了其目前的工程应用。
Combined the topological relation of suspen - dome and the concept of overall feasible pre - stress , by using the equilibrium matrix theory method and linear static method , the problem of distribution of initial pre - stress of suspen - dome is simplified 结合整体可行预应力的概念,并考虑结构自身的拓扑关系,采用平衡矩阵理论方法和线性静力分析法,对弦支穹顶结构的初始预应力分布的确定进行简化。