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 147 36.9%
2 China 125 31.4%
3 Germany 33 8.3%
4 Netherlands 32 8%
5 Russia 14 3.5%
6 Korea, Republic of 9 2.3%
7 Malaysia 6 1.5%
8 Senegal 5 1.3%
9 Hong Kong 5 1.3%
10 France 4 1%
11 Norway 4 1%
12 Japan 3 0.8%
13 Belgium 3 0.8%
14 Nigeria 2 0.5%
15 Singapore 1 0.3%
16 Switzerland 1 0.3%
17 Brazil 1 0.3%
18 Canada 1 0.3%
19 Hungary 1 0.3%
20 India 1 0.3%