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 88 44.4%
2 United States 56 28.3%
3 Netherlands 19 9.6%
4 Canada 14 7.1%
5 Korea, Republic of 7 3.5%
6 India 4 2%
7 Senegal 3 1.5%
8 Australia 2 1%
9 United Kingdom 2 1%
10 Germany 1 0.5%
11 Hong Kong 1 0.5%
12 Switzerland 1 0.5%