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 214 50.1%
2 United States 162 37.9%
3 Germany 31 7.3%
4 Hong Kong 4 0.9%
5 Netherlands 3 0.7%
6 United Kingdom 2 0.5%
7 Australia 2 0.5%
8 Canada 2 0.5%
9 Latvia 2 0.5%
10 Bulgaria 1 0.2%
11 India 1 0.2%
12 Korea, Republic of 1 0.2%
13 Russia 1 0.2%
14 Singapore 1 0.2%