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 204 61.1%
2 United States 62 18.6%
3 Germany 43 12.9%
4 Hong Kong 5 1.5%
5 Canada 4 1.2%
6 Russia 4 1.2%
7 Sweden 2 0.6%
8 Australia 2 0.6%
9 Japan 2 0.6%
10 Netherlands 2 0.6%
11 France 1 0.3%
12 Taiwan 1 0.3%
13 Ukraine 1 0.3%
14 Singapore 1 0.3%