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 253 63.6%
2 United States 55 13.8%
3 Germany 40 10.1%
4 Sweden 14 3.5%
5 Canada 10 2.5%
6 Netherlands 9 2.3%
7 Hong Kong 7 1.8%
8 Italy 2 0.5%
9 Poland 2 0.5%
10 Russia 2 0.5%
11 Singapore 2 0.5%
12 Ukraine 2 0.5%