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 62 48.8%
2 United States 30 23.6%
3 Germany 11 8.7%
4 Netherlands 7 5.5%
5 United Kingdom 4 3.1%
6 India 3 2.4%
7 Korea, Republic of 3 2.4%
8 Czech Republic 2 1.6%
9 France 2 1.6%
10 Belgium 2 1.6%
11 Canada 1 0.8%