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 206 58.7%
2 United States 51 14.5%
3 Germany 34 9.7%
4 Canada 20 5.7%
5 Korea, Republic of 6 1.7%
6 Hong Kong 5 1.4%
7 United Kingdom 5 1.4%
8 Singapore 5 1.4%
9 Russia 4 1.1%
10 Netherlands 4 1.1%
11 Portugal 2 0.6%
12 India 2 0.6%
13 Australia 2 0.6%
14 Belgium 1 0.3%
15 Brazil 1 0.3%
16 Malaysia 1 0.3%
17 Japan 1 0.3%
18 Sweden 1 0.3%