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 279 70.8%
2 United States 49 12.4%
3 Germany 39 9.9%
4 Hong Kong 6 1.5%
5 Netherlands 3 0.8%
6 Singapore 3 0.8%
7 Canada 3 0.8%
8 Spain 2 0.5%
9 United Kingdom 2 0.5%
10 Poland 2 0.5%
11 Russia 2 0.5%
12 Egypt 2 0.5%
13 France 1 0.3%
14 Italy 1 0.3%