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 150 54%
2 United States 68 24.5%
3 Germany 29 10.4%
4 Canada 14 5%
5 Hong Kong 5 1.8%
6 Norway 3 1.1%
7 Russia 2 0.7%
8 Japan 2 0.7%
9 Netherlands 2 0.7%
10 Czech Republic 1 0.4%
11 Luxembourg 1 0.4%
12 Singapore 1 0.4%