BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 31 40.3%
2 Netherlands 14 18.2%
3 United States 13 16.9%
4 Germany 6 7.8%
5 Hong Kong 5 6.5%
6 Norway 3 3.9%
7 Japan 2 2.6%
8 France 1 1.3%
9 Russia 1 1.3%
10 Canada 1 1.3%