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 109 45.6%
2 United States 65 27.2%
3 Netherlands 13 5.4%
4 Germany 12 5%
5 Korea, Republic of 11 4.6%
6 Russia 10 4.2%
7 France 7 2.9%
8 Norway 3 1.3%
9 Philippines 3 1.3%
10 Ireland 2 0.8%
11 Canada 2 0.8%
12 Brazil 1 0.4%
13 Switzerland 1 0.4%