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 104 45%
2 United States 60 26%
3 Germany 24 10.4%
4 Netherlands 23 10%
5 Korea, Republic of 7 3%
6 United Kingdom 2 0.9%
7 Singapore 2 0.9%
8 France 2 0.9%
9 Bangladesh 1 0.4%
10 Brazil 1 0.4%
11 Canada 1 0.4%
12 Russia 1 0.4%
13 Iraq 1 0.4%
14 Japan 1 0.4%
15 Ukraine 1 0.4%