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 246 61%
2 United States 88 21.8%
3 Germany 27 6.7%
4 Canada 12 3%
5 Taiwan 9 2.2%
6 United Kingdom 3 0.7%
7 Singapore 3 0.7%
8 Japan 3 0.7%
9 Netherlands 3 0.7%
10 Russia 2 0.5%
11 Australia 2 0.5%
12 France 2 0.5%
13 Hong Kong 1 0.2%
14 Sweden 1 0.2%
15 Switzerland 1 0.2%