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 195 61.7%
2 United States 44 13.9%
3 Germany 39 12.3%
4 Russia 8 2.5%
5 Netherlands 4 1.3%
6 Hong Kong 4 1.3%
7 Canada 4 1.3%
8 United Kingdom 3 0.9%
9 Spain 2 0.6%
10 Taiwan 2 0.6%
11 Ukraine 2 0.6%
12 Moldova, Republic of 2 0.6%
13 2 0.6%
14 Brazil 2 0.6%
15 Finland 1 0.3%
16 Ireland 1 0.3%
17 Singapore 1 0.3%