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 20 28.2%
2 Canada 13 18.3%
3 United States 12 16.9%
4 Russia 9 12.7%
5 Japan 5 7%
6 Netherlands 3 4.2%
7 Germany 3 4.2%
8 Hong Kong 3 4.2%
9 Poland 1 1.4%
10 Singapore 1 1.4%
11 United Arab Emirates 1 1.4%