BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 44 41.1%
2 United States 23 21.5%
3 Germany 12 11.2%
4 Netherlands 7 6.5%
5 United Kingdom 5 4.7%
6 Korea, Republic of 4 3.7%
7 Czech Republic 4 3.7%
8 France 3 2.8%
9 India 2 1.9%
10 Canada 2 1.9%
11 Japan 1 0.9%