It was spotted in the 798 art district of Beijing and looks to be a common grey BMW Z4 m Coupe parked unusually.
这是一辆在北京798艺术区发现的灰色宝马Z 4跑车，看起来与正常车没什么区别。
The index system for evaluation of scientific and technical strength of provincial district has been presented with grey system theory and Delphi Method.
运用灰色系统原理和德尔菲法，建立了省级区域科技综合实力评估指标体系；
Grey theory is used to forecast the fire frequency and the direct economic losses from 2000 to 2005 in Nanan District, Chongqing city.
运用灰色理论预测了2000 - 2005年重庆南岸区火灾次数与直接经济损失。
Grey theory is used to forecast the fire frequency and the direct economic losses from 2000 to 2005 in Nanan District, Chongqing city.
运用灰色理论预测了2000 - 2005年重庆南岸区火灾次数与直接经济损失。
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