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 89 43.2%
2 China 54 26.2%
3 Netherlands 23 11.2%
4 Germany 8 3.9%
5 Korea, Republic of 6 2.9%
6 Ghana 5 2.4%
7 Malaysia 5 2.4%
8 Poland 4 1.9%
9 India 3 1.5%
10 Hong Kong 2 1%
11 Luxembourg 2 1%
12 Norway 2 1%
13 Russia 1 0.5%
14 Bangladesh 1 0.5%
15 Lithuania 1 0.5%