BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 China 31 39.2%
2 United States 21 26.6%
3 Germany 9 11.4%
4 Netherlands 7 8.9%
5 Taiwan 4 5.1%
6 Republic of Korea 2 2.5%
7 Romania 2 2.5%
8 Canada 1 1.3%
9 Korea, Republic of 1 1.3%
10 Georgia 1 1.3%