机译:Intra- and Inter-annual Variation of Soil Microbial and Enzymatic Response to Water and Nitrogen Addition in a Chinese Semi-arid SteppeAU Sun, Liangjie Dong, Yunshe Qi, Yuchun (qiyc@igsnrr.ac.cn) He, Yating Peng, Qin Liu, Xinchao Jia, Junqiang Guo, Shufang Cao, Congcong
机译:The Impacts of Margin Trading on Rate of Return and Volatility in the Stock Market: A Study Using the SVAR Model and Panel Regressions =融资对股价收益与波动的影响特征研究——基于SVAR模型与面板模型的实证分析