摘要：为探究水泵水轮机全特性曲线S特性与尾水压力最小值的联系,基于新丰抽水蓄能电站的过渡过程数值仿真模型模拟了尾水最不利相继甩工况。通过调整机组运行轨迹线附近开度线斜率,对比分析并总结S区形状变化对相继甩工况尾水压力极值的影响规律,提出了一种图形指标,能够应用在抽蓄前期设计中评价S特性对尾水压力影响优劣,并验证其准确性。结果表明,相继甩工况后甩机组流量变化率第一波下降时,机组运行轨迹线呈现完整倒S形,S区形状变化改变了机组流量变化率的大小,导致出现在靠近轨迹线S形下拐点前的尾水压力极值发生变化,给出的图形指标形状越趋近于竖向细长的规则长方形,相应的尾水最小压力的改善效果越好。

摘要：As a new two-dimensional layered structural material,Ti_(3)C_(2)T_(x)has excellent electrical conductivity,mechanical properties,hydrophilicity and rich functional groups,showing a wide application prospect in the field of energy ***,when Ti_(3)C_(2)T_(x)is used as the electrode material of energy storage device,it is easy to stack due to the van der Waals forces between the layers,which hinders the reaction between the surface active site and electrolyte ions,lengthens the path of ion diffusion,and affects its specific capacity and rate *** address the above problems,this paper summarizes the research progress of Ti_(3)C_(2)T_(x)surface modification including designing three-dimensional nanostructures,constructing intercalated structural composites(composite with monomers,oxides,sulfides,and selenides),and doping with heteroatoms in sodium-ion batteries,and describes in detail the strategies or mechanisms of battery performance enhancement in conjunction with its preparation ***,its future research direction and development prospects are envisioned.

摘要：本文从创新的内涵、特征和来源等三个方面对德鲁克创新思想的核心进行了梳理和分析,并在此基础上提出了德鲁克创新思想对中国动漫产业创新发展的启示,包括三个方面:第一,以系统性的原则来建构中国动漫产业的创新体系;第二,以人本性的原则来体现中国动漫产业的创新价值;第三,以主导未来的原则来引领中国动漫产业的创新实践。