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 158 48.2%
2 United States 72 22%
3 Germany 46 14%
4 Canada 21 6.4%
5 Netherlands 16 4.9%
6 Russia 4 1.2%
7 Sweden 3 0.9%
8 United Kingdom 2 0.6%
9 Poland 2 0.6%
10 Hong Kong 2 0.6%
11 India 1 0.3%
12 Belgium 1 0.3%