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 55 51.4%
2 Germany 12 11.2%
3 Netherlands 12 11.2%
4 United States 10 9.3%
5 Korea, Republic of 8 7.5%
6 France 5 4.7%
7 Russia 2 1.9%
8 Canada 1 0.9%
9 Norway 1 0.9%
10 Philippines 1 0.9%