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 576 56.4%
2 United States 171 16.7%
3 Netherlands 97 9.5%
4 Germany 58 5.7%
5 France 48 4.7%
6 Canada 19 1.9%
7 Korea, Republic of 17 1.7%
8 Russia 9 0.9%
9 India 8 0.8%
10 Hong Kong 5 0.5%
11 Singapore 3 0.3%
12 Taiwan 2 0.2%
13 Ukraine 2 0.2%
14 Luxembourg 2 0.2%
15 Bulgaria 2 0.2%
16 Finland 1 0.1%
17 Romania 1 0.1%