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 177 62.5%
2 United States 45 15.9%
3 Germany 28 9.9%
4 Canada 9 3.2%
5 Ireland 6 2.1%
6 Netherlands 4 1.4%
7 Taiwan 4 1.4%
8 United Kingdom 3 1.1%
9 Singapore 2 0.7%
10 Latvia 2 0.7%
11 France 2 0.7%
12 Russia 1 0.4%