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 186 42.7%
2 China 118 27.1%
3 Netherlands 40 9.2%
4 Germany 28 6.4%
5 Russia 17 3.9%
6 Korea, Republic of 10 2.3%
7 Senegal 6 1.4%
8 Singapore 3 0.7%
9 Nigeria 3 0.7%
10 Norway 3 0.7%
11 France 3 0.7%
12 Sweden 3 0.7%
13 Poland 2 0.5%
14 Spain 2 0.5%
15 Ghana 2 0.5%
16 Hong Kong 2 0.5%
17 Denmark 2 0.5%
18 Australia 2 0.5%
19 Canada 1 0.2%
20 Malaysia 1 0.2%
21 Turkey 1 0.2%
22 United Kingdom 1 0.2%