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 159 57.2%
2 United States 53 19.1%
3 Netherlands 17 6.1%
4 Germany 13 4.7%
5 Russia 11 4%
6 Korea, Republic of 7 2.5%
7 France 5 1.8%
8 Philippines 3 1.1%
9 Canada 2 0.7%
10 Taiwan 2 0.7%
11 Malaysia 2 0.7%
12 Mauritius 1 0.4%
13 Norway 1 0.4%
14 Japan 1 0.4%
15 Sweden 1 0.4%