BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 31 30.7%
2 United States 18 17.8%
3 Germany 16 15.8%
4 Netherlands 9 8.9%
5 France 8 7.9%
6 Hong Kong 4 4%
7 Russia 4 4%
8 Korea, Republic of 3 3%
9 India 2 2%
10 United Kingdom 2 2%
11 Canada 2 2%
12 Mexico 1 1%
13 Romania 1 1%