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 145 64.4%
2 United States 30 13.3%
3 Netherlands 18 8%
4 Germany 9 4%
5 Hong Kong 6 2.7%
6 Finland 4 1.8%
7 Canada 4 1.8%
8 France 3 1.3%
9 Nigeria 3 1.3%
10 Norway 1 0.4%
11 Singapore 1 0.4%
12 Japan 1 0.4%