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 165 55.6%
2 United States 58 19.5%
3 Germany 40 13.5%
4 Netherlands 8 2.7%
5 Canada 4 1.3%
6 Korea, Republic of 4 1.3%
7 Hong Kong 3 1%
8 Russia 3 1%
9 Romania 2 0.7%
10 United Kingdom 2 0.7%
11 Australia 2 0.7%
12 Belgium 1 0.3%
13 Mexico 1 0.3%
14 India 1 0.3%
15 Ireland 1 0.3%
16 Saudi Arabia 1 0.3%
17 South Africa 1 0.3%