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 United States 80 37.7%
2 Korea, Republic of 32 15.1%
3 India 20 9.4%
4 China 17 8%
5 Netherlands 17 8%
6 Germany 13 6.1%
7 Russia 7 3.3%
8 France 6 2.8%
9 Czech Republic 4 1.9%
10 Canada 3 1.4%
11 Iran, Islamic Republic of 3 1.4%
12 Japan 2 0.9%
13 Greece 2 0.9%
14 Turkey 2 0.9%
15 Saudi Arabia 1 0.5%
16 Hong Kong 1 0.5%
17 Bulgaria 1 0.5%
18 Finland 1 0.5%