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 228 53.5%
2 China 129 30.3%
3 Germany 35 8.2%
4 Taiwan 13 3.1%
5 Hong Kong 4 0.9%
6 3 0.7%
7 Singapore 3 0.7%
8 Canada 2 0.5%
9 France 2 0.5%
10 Japan 2 0.5%
11 Netherlands 2 0.5%
12 Russia 1 0.2%
13 Australia 1 0.2%
14 United Kingdom 1 0.2%