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 72 45%
2 United States 29 18.1%
3 Netherlands 16 10%
4 Germany 13 8.1%
5 Korea, Republic of 9 5.6%
6 France 7 4.4%
7 Russia 6 3.8%
8 Norway 4 2.5%
9 Switzerland 2 1.2%
10 Philippines 1 0.6%
11 Ireland 1 0.6%