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 United States 236 52.9%
2 China 140 31.4%
3 Germany 32 7.2%
4 Hong Kong 11 2.5%
5 India 4 0.9%
6 Netherlands 4 0.9%
7 Singapore 3 0.7%
8 Ireland 3 0.7%
9 France 2 0.4%
10 Malaysia 2 0.4%
11 Mexico 2 0.4%
12 Canada 2 0.4%
13 Norway 1 0.2%
14 Spain 1 0.2%
15 Taiwan 1 0.2%
16 United Kingdom 1 0.2%
17 Japan 1 0.2%