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 374 46.5%
2 United States 191 23.7%
3 Netherlands 134 16.6%
4 Germany 52 6.5%
5 Canada 17 2.1%
6 Russia 16 2%
7 India 4 0.5%
8 France 4 0.5%
9 Bulgaria 2 0.2%
10 Italy 2 0.2%
11 South Africa 2 0.2%
12 United Kingdom 2 0.2%
13 Viet Nam 2 0.2%
14 Norway 1 0.1%
15 Hong Kong 1 0.1%
16 Australia 1 0.1%