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 United States 248 44.5%
2 China 233 41.8%
3 Germany 44 7.9%
4 Canada 6 1.1%
5 Netherlands 4 0.7%
6 Japan 3 0.5%
7 Hong Kong 3 0.5%
8 Ireland 2 0.4%
9 Italy 2 0.4%
10 Austria 2 0.4%
11 France 2 0.4%
12 Kazakhstan 2 0.4%
13 Singapore 2 0.4%
14 Spain 1 0.2%
15 Turkey 1 0.2%
16 Macao 1 0.2%
17 India 1 0.2%