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 159 53%
2 United States 58 19.3%
3 Germany 32 10.7%
4 Canada 17 5.7%
5 Australia 5 1.7%
6 Ireland 5 1.7%
7 Netherlands 5 1.7%
8 Taiwan 4 1.3%
9 United Kingdom 3 1%
10 Sweden 3 1%
11 Switzerland 2 0.7%
12 Romania 2 0.7%
13 Singapore 2 0.7%
14 Japan 1 0.3%
15 Malaysia 1 0.3%
16 India 1 0.3%