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 China 104 43%
2 United States 73 30.2%
3 Netherlands 19 7.9%
4 Korea, Republic of 10 4.1%
5 Germany 8 3.3%
6 Ghana 7 2.9%
7 Russia 5 2.1%
8 Poland 4 1.7%
9 Norway 3 1.2%
10 Belgium 2 0.8%
11 Canada 2 0.8%
12 India 2 0.8%
13 Japan 2 0.8%
14 Sweden 1 0.4%