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 121 38.3%
2 China 95 30.1%
3 Netherlands 28 8.9%
4 Germany 25 7.9%
5 Russia 12 3.8%
6 Ghana 7 2.2%
7 Hong Kong 7 2.2%
8 Korea, Republic of 7 2.2%
9 Taiwan 3 0.9%
10 Poland 3 0.9%
11 Ukraine 2 0.6%
12 Norway 2 0.6%
13 India 2 0.6%
14 Canada 1 0.3%
15 Finland 1 0.3%