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 230 51.3%
2 United States 135 30.1%
3 Germany 33 7.4%
4 Canada 10 2.2%
5 Netherlands 9 2%
6 Australia 6 1.3%
7 Hong Kong 6 1.3%
8 Russia 5 1.1%
9 Serbia 2 0.4%
10 Singapore 2 0.4%
11 France 2 0.4%
12 Malaysia 2 0.4%
13 United Kingdom 2 0.4%
14 India 1 0.2%
15 Uzbekistan 1 0.2%
16 Taiwan 1 0.2%
17 Ukraine 1 0.2%