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 66 25.2%
2 United States 52 19.8%
3 Germany 37 14.1%
4 Japan 23 8.8%
5 Netherlands 22 8.4%
6 Taiwan 15 5.7%
7 Russia 12 4.6%
8 Korea, Republic of 11 4.2%
9 Hong Kong 3 1.1%
10 Belgium 3 1.1%
11 United Kingdom 3 1.1%
12 Belarus 2 0.8%
13 Colombia 2 0.8%
14 Czech Republic 2 0.8%
15 Italy 2 0.8%
16 Sweden 2 0.8%
17 Ukraine 1 0.4%
18 Singapore 1 0.4%
19 Romania 1 0.4%
20 India 1 0.4%
21 Moldova, Republic of 1 0.4%