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 234 83%
2 United States 19 6.7%
3 Netherlands 8 2.8%
4 Japan 4 1.4%
5 France 4 1.4%
6 Canada 3 1.1%
7 Germany 2 0.7%
8 Hong Kong 2 0.7%
9 Taiwan 2 0.7%
10 United Kingdom 1 0.4%
11 Italy 1 0.4%
12 Singapore 1 0.4%
13 Sweden 1 0.4%