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 United States 57 43.5%
2 China 39 29.8%
3 Canada 10 7.6%
4 Germany 8 6.1%
5 United Kingdom 5 3.8%
6 Taiwan 3 2.3%
7 Mexico 3 2.3%
8 Netherlands 3 2.3%
9 Russia 1 0.8%
10 Korea, Republic of 1 0.8%
11 France 1 0.8%