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 105 40.9%
2 China 75 29.2%
3 Netherlands 28 10.9%
4 Germany 12 4.7%
5 Ghana 7 2.7%
6 Hong Kong 7 2.7%
7 Korea, Republic of 7 2.7%
8 Poland 3 1.2%
9 Taiwan 3 1.2%
10 Ukraine 2 0.8%
11 Russia 2 0.8%
12 Norway 2 0.8%
13 India 2 0.8%
14 Canada 1 0.4%
15 Finland 1 0.4%