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 218 61.6%
2 Germany 52 14.7%
3 United States 35 9.9%
4 Netherlands 18 5.1%
5 Russia 8 2.3%
6 India 5 1.4%
7 Italy 5 1.4%
8 Brazil 3 0.8%
9 Canada 2 0.6%
10 Hong Kong 2 0.6%
11 Japan 2 0.6%
12 Viet Nam 2 0.6%
13 Ukraine 1 0.3%
14 Ireland 1 0.3%