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 195 52.1%
2 United States 88 23.5%
3 Germany 42 11.2%
4 Canada 31 8.3%
5 Russia 5 1.3%
6 Sweden 2 0.5%
7 Taiwan 2 0.5%
8 United Kingdom 2 0.5%
9 Hong Kong 2 0.5%
10 India 2 0.5%
11 Netherlands 2 0.5%
12 Norway 1 0.3%