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 181 58.4%
2 United States 57 18.4%
3 Germany 40 12.9%
4 Canada 16 5.2%
5 Netherlands 4 1.3%
6 Russia 3 1%
7 India 3 1%
8 Luxembourg 2 0.6%
9 Hong Kong 2 0.6%
10 Greece 1 0.3%
11 Switzerland 1 0.3%