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 15 32.6%
2 United States 12 26.1%
3 Germany 9 19.6%
4 Romania 3 6.5%
5 Netherlands 2 4.3%
6 Republic of Korea 2 4.3%
7 Serbia 1 2.2%
8 Hong Kong 1 2.2%
9 France 1 2.2%