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 320 73.6%
2 United States 49 11.3%
3 Netherlands 23 5.3%
4 Canada 8 1.8%
5 Korea, Republic of 5 1.1%
6 Hong Kong 4 0.9%
7 India 4 0.9%
8 Russia 4 0.9%
9 Senegal 4 0.9%
10 Singapore 4 0.9%
11 Germany 3 0.7%
12 Japan 2 0.5%
13 Malaysia 2 0.5%
14 Taiwan 2 0.5%
15 Brazil 1 0.2%