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 461 48.4%
2 Netherlands 161 16.9%
3 United States 136 14.3%
4 Germany 56 5.9%
5 Taiwan 41 4.3%
6 Canada 19 2%
7 Hong Kong 14 1.5%
8 Russia 13 1.4%
9 Korea, Republic of 11 1.2%
10 France 7 0.7%
11 India 5 0.5%
12 Ireland 3 0.3%
13 Japan 3 0.3%
14 3 0.3%
15 Mali 3 0.3%
16 Turkey 3 0.3%
17 Sweden 2 0.2%
18 United Kingdom 2 0.2%
19 Morocco 2 0.2%
20 Malaysia 2 0.2%
21 Norway 2 0.2%
22 Serbia 1 0.1%
23 Singapore 1 0.1%
24 Finland 1 0.1%
25 Ukraine 1 0.1%