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 156 58.6%
2 United States 51 19.2%
3 Germany 36 13.5%
4 Canada 14 5.3%
5 Switzerland 2 0.8%
6 United Kingdom 2 0.8%
7 Netherlands 2 0.8%
8 Norway 1 0.4%
9 Singapore 1 0.4%
10 Belgium 1 0.4%