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 257 48.6%
2 United States 211 39.9%
3 Germany 36 6.8%
4 Canada 11 2.1%
5 Italy 2 0.4%
6 Denmark 2 0.4%
7 Netherlands 2 0.4%
8 Singapore 2 0.4%
9 Taiwan 1 0.2%
10 Ukraine 1 0.2%
11 United Kingdom 1 0.2%
12 Hong Kong 1 0.2%
13 India 1 0.2%
14 Japan 1 0.2%