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 149 56.4%
2 United States 50 18.9%
3 Germany 27 10.2%
4 Canada 13 4.9%
5 Taiwan 9 3.4%
6 Netherlands 4 1.5%
7 Singapore 2 0.8%
8 Spain 2 0.8%
9 Japan 2 0.8%
10 United Kingdom 2 0.8%
11 Viet Nam 2 0.8%
12 1 0.4%
13 Sweden 1 0.4%