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 113 49.1%
2 United States 53 23%
3 Netherlands 20 8.7%
4 Germany 13 5.7%
5 Korea, Republic of 7 3%
6 Canada 5 2.2%
7 4 1.7%
8 France 4 1.7%
9 India 3 1.3%
10 Hong Kong 2 0.9%
11 Russia 2 0.9%
12 Sweden 1 0.4%
13 Taiwan 1 0.4%
14 United Kingdom 1 0.4%
15 Estonia 1 0.4%