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 47 36.2%
2 United States 15 11.5%
3 Germany 14 10.8%
4 Netherlands 14 10.8%
5 France 11 8.5%
6 Russia 7 5.4%
7 Korea, Republic of 7 5.4%
8 Japan 4 3.1%
9 Sweden 4 3.1%
10 Turkey 3 2.3%
11 Canada 2 1.5%
12 Czech Republic 1 0.8%
13 United Kingdom 1 0.8%