Optimized time analysis of observing perpendicular angles in open - pit coal mines 露天矿观测垂直角的最佳时间分析
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The paper retrospects the development of the state - owned assets management system from the beginning of " open market policy " to nowadays in perpendicular angle 以纵向的视角,回顾了我国改革开放以来国有资产管理体制的发展演变,并对我国国有资产管理体制进行了评价。