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 184 53.5%
2 United States 83 24.1%
3 Germany 34 9.9%
4 Canada 25 7.3%
5 Russia 5 1.5%
6 Spain 3 0.9%
7 United Kingdom 2 0.6%
8 Australia 2 0.6%
9 1 0.3%
10 Armenia 1 0.3%
11 Mauritius 1 0.3%
12 Norway 1 0.3%
13 Philippines 1 0.3%
14 Singapore 1 0.3%