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 United States 51 34.2%
2 China 46 30.9%
3 Netherlands 16 10.7%
4 Sweden 11 7.4%
5 Germany 9 6%
6 Hong Kong 4 2.7%
7 Cote D'ivoire 3 2%
8 Australia 2 1.3%
9 India 2 1.3%
10 Moldova, Republic of 2 1.3%
11 Taiwan 2 1.3%
12 United Kingdom 1 0.7%