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 44 40.4%
2 United States 21 19.3%
3 Netherlands 17 15.6%
4 Germany 8 7.3%
5 Canada 8 7.3%
6 Russia 4 3.7%
7 Sweden 2 1.8%
8 Czech Republic 2 1.8%
9 Finland 1 0.9%
10 Australia 1 0.9%
11 Hong Kong 1 0.9%