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 United States 19 26.4%
2 United Kingdom 16 22.2%
3 China 15 20.8%
4 Russia 6 8.3%
5 Estonia 3 4.2%
6 France 2 2.8%
7 Czech Republic 2 2.8%
8 India 2 2.8%
9 Korea, Republic of 1 1.4%
10 Latvia 1 1.4%
11 Netherlands 1 1.4%
12 Poland 1 1.4%
13 Hong Kong 1 1.4%
14 Ukraine 1 1.4%
15 Canada 1 1.4%