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 446 53.6%
2 United States 174 20.9%
3 Netherlands 96 11.5%
4 Germany 68 8.2%
5 Canada 16 1.9%
6 Russia 7 0.8%
7 France 6 0.7%
8 Singapore 3 0.4%
9 Norway 3 0.4%
10 Sweden 2 0.2%
11 Ukraine 2 0.2%
12 Australia 2 0.2%
13 Italy 2 0.2%
14 Japan 2 0.2%
15 Korea, Republic of 2 0.2%
16 India 1 0.1%