The increasing availability of devices to capture the position of moving objects (and other environmental information) l......

研究目标:探索高、低端型产品内分工的演变规律及其核心驱动因素。研究方法:基于45个国家(地区)1996~2016年的HS六位码数据构建指......

Due to the difficulty in measuring the burden trajectory directly in an actual blast furnace (BF), a mathematical model ......

In summer of 2001, 2002 and 2003, ten, six and seventeen satellite-tracked surface drifters with drogues centered at 15 ......