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 114 55.3%
2 China 49 23.8%
3 Germany 16 7.8%
4 Netherlands 13 6.3%
5 Canada 3 1.5%
6 Korea, Republic of 3 1.5%
7 Ghana 2 1%
8 Hong Kong 2 1%
9 Singapore 2 1%
10 United Kingdom 1 0.5%
11 Poland 1 0.5%