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 83 34%
2 United States 53 21.7%
3 Netherlands 43 17.6%
4 Germany 13 5.3%
5 India 12 4.9%
6 Canada 8 3.3%
7 United Kingdom 6 2.5%
8 Russia 4 1.6%
9 Sweden 3 1.2%
10 Brazil 3 1.2%
11 Belgium 2 0.8%
12 Taiwan 2 0.8%
13 France 2 0.8%
14 Spain 2 0.8%
15 Norway 2 0.8%
16 Poland 1 0.4%
17 Saudi Arabia 1 0.4%
18 Singapore 1 0.4%
19 Australia 1 0.4%
20 Ireland 1 0.4%
21 Colombia 1 0.4%