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 226 61.2%
2 United States 73 19.8%
3 Germany 37 10%
4 Hong Kong 7 1.9%
5 Netherlands 6 1.6%
6 Russia 5 1.4%
7 Sweden 3 0.8%
8 Taiwan 3 0.8%
9 Canada 2 0.5%
10 Singapore 2 0.5%
11 Norway 2 0.5%
12 Philippines 2 0.5%
13 Japan 1 0.3%