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 114 56.7%
2 United States 29 14.4%
3 Netherlands 17 8.5%
4 Germany 14 7%
5 Korea, Republic of 9 4.5%
6 Senegal 5 2.5%
7 Taiwan 4 2%
8 United Kingdom 3 1.5%
9 Australia 2 1%
10 Malaysia 2 1%
11 South Africa 1 0.5%
12 Switzerland 1 0.5%