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 124 42.2%
2 China 84 28.6%
3 Netherlands 24 8.2%
4 Germany 18 6.1%
5 Russia 10 3.4%
6 Korea, Republic of 6 2%
7 Ghana 5 1.7%
8 Malaysia 5 1.7%
9 Poland 4 1.4%
10 India 3 1%
11 Luxembourg 2 0.7%
12 Norway 2 0.7%
13 Taiwan 2 0.7%
14 Hong Kong 2 0.7%
15 Lithuania 1 0.3%
16 Bangladesh 1 0.3%
17 Brazil 1 0.3%