The Cato Institute, a libertarian think-tank, gave him a "d" grade for fiscal policy.
Cato研究所，一个自由意志主义者的智囊团，在财政政策上给了他一个“D”。
Further more, the inner structure and accessory device of D-type filter tank with DA863 adaptive filtering material as the technical core are explained.
并对以DA863自适应滤料为技术核心的D型滤池的内部结构和配套附属设施等做了进一步的说明。
In this paper, FEM was applied to analyze the stresses in the spherical tank with staggered joint defects, and the distribution of 2-d stresses and bending stress were discussed.
应用有限单元法对含错边缺陷的球罐进行了应力分析，讨论了球罐的两向应力变化规律及其弯曲应力分布规律。
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