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 142 49.5%
2 United States 59 20.6%
3 Germany 34 11.8%
4 Netherlands 12 4.2%
5 Australia 9 3.1%
6 Taiwan 7 2.4%
7 Hong Kong 5 1.7%
8 Russia 5 1.7%
9 Canada 3 1%
10 Switzerland 3 1%
11 United Kingdom 2 0.7%
12 Singapore 2 0.7%
13 Spain 2 0.7%
14 Finland 1 0.3%
15 Iraq 1 0.3%