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 310 43.4%
2 United States 153 21.4%
3 Netherlands 103 14.4%
4 Germany 68 9.5%
5 Sweden 15 2.1%
6 Canada 13 1.8%
7 Hong Kong 10 1.4%
8 Russia 10 1.4%
9 United Kingdom 5 0.7%
10 France 4 0.6%
11 Singapore 4 0.6%
12 Ukraine 4 0.6%
13 India 4 0.6%
14 Indonesia 3 0.4%
15 Australia 3 0.4%
16 Finland 2 0.3%
17 Italy 2 0.3%
18 Korea, Republic of 2 0.3%