BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 111 60%
2 United States 29 15.7%
3 Netherlands 12 6.5%
4 Germany 7 3.8%
5 Hong Kong 6 3.2%
6 Russia 4 2.2%
7 Taiwan 3 1.6%
8 United Kingdom 3 1.6%
9 Sweden 1 0.5%
10 Norway 1 0.5%
11 Portugal 1 0.5%
12 Ireland 1 0.5%
13 Japan 1 0.5%
14 Malaysia 1 0.5%
15 France 1 0.5%
16 Australia 1 0.5%
17 Brazil 1 0.5%
18 Canada 1 0.5%