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 473 49.5%
2 United States 209 21.9%
3 Netherlands 121 12.7%
4 Germany 49 5.1%
5 Taiwan 26 2.7%
6 Hong Kong 14 1.5%
7 Japan 14 1.5%
8 Canada 10 1%
9 Malaysia 9 0.9%
10 Australia 7 0.7%
11 Kazakhstan 5 0.5%
12 France 5 0.5%
13 Singapore 3 0.3%
14 United Kingdom 2 0.2%
15 Equatorial Guinea 2 0.2%
16 Finland 2 0.2%
17 Viet Nam 2 0.2%
18 Switzerland 1 0.1%
19 Russia 1 0.1%