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 191 62%
2 United States 42 13.6%
3 Germany 35 11.4%
4 Japan 7 2.3%
5 Russia 6 1.9%
6 Singapore 5 1.6%
7 Hong Kong 4 1.3%
8 Taiwan 3 1%
9 Romania 3 1%
10 United Kingdom 2 0.6%
11 Korea, Republic of 2 0.6%
12 Finland 2 0.6%
13 Australia 2 0.6%
14 Canada 2 0.6%
15 France 1 0.3%
16 Ukraine 1 0.3%