BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 65 46.4%
2 Germany 25 17.9%
3 Netherlands 17 12.1%
4 United States 13 9.3%
5 Canada 5 3.6%
6 Russia 4 2.9%
7 France 3 2.1%
8 Czech Republic 2 1.4%
9 South Africa 2 1.4%
10 India 2 1.4%
11 Ireland 2 1.4%