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 155 57.6%
2 United States 50 18.6%
3 Germany 37 13.8%
4 Netherlands 4 1.5%
5 Sweden 4 1.5%
6 Taiwan 4 1.5%
7 Russia 3 1.1%
8 Canada 3 1.1%
9 Australia 2 0.7%
10 Singapore 2 0.7%
11 United Kingdom 2 0.7%
12 Tunisia 1 0.4%
13 Guatemala 1 0.4%
14 Moldova, Republic of 1 0.4%