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 94 40.7%
2 China 61 26.4%
3 Netherlands 35 15.2%
4 Germany 11 4.8%
5 Korea, Republic of 8 3.5%
6 United Kingdom 5 2.2%
7 Russia 4 1.7%
8 Singapore 3 1.3%
9 Canada 3 1.3%
10 Hong Kong 3 1.3%
11 Hungary 2 0.9%
12 Japan 1 0.4%
13 Brazil 1 0.4%