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 42 41.6%
2 United States 28 27.7%
3 Germany 9 8.9%
4 Ireland 5 5%
5 Italy 3 3%
6 France 3 3%
7 Norway 3 3%
8 Sweden 2 2%
9 Switzerland 2 2%
10 Netherlands 2 2%
11 United Kingdom 1 1%
12 Hong Kong 1 1%