This text analyse ge tragedy factors and tragedy love from Brother the characteristic of stratum and the historic social environment at that time.
本文从哥萨克阶层的特点和当时历史社会环境来分析葛利高里的悲剧因素和葛利高里的悲剧爱情。
The merchant stratum was the characteristic social group of central Shanxi.
商人阶层是晋中地区最具特色的社会群体。
The petrology studies on stratum together with the characteristic of Xinchang petrified wood, the palaeoecologic environment of Xinchang petrified wood Araucarioxylon forming is analysed.
结合硅化木特征与地层岩石学研究，探讨了新昌硅化木形成的古生态环境。
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