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 205 61.7%
2 United States 58 17.5%
3 Germany 28 8.4%
4 Canada 14 4.2%
5 Taiwan 9 2.7%
6 Netherlands 3 0.9%
7 Russia 3 0.9%
8 Hong Kong 3 0.9%
9 India 2 0.6%
10 Denmark 2 0.6%
11 France 1 0.3%
12 Belgium 1 0.3%
13 Italy 1 0.3%
14 Macao 1 0.3%
15 United Kingdom 1 0.3%