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 173 60.1%
2 United States 51 17.7%
3 Germany 28 9.7%
4 Canada 10 3.5%
5 Norway 6 2.1%
6 Singapore 4 1.4%
7 Portugal 3 1%
8 Hungary 3 1%
9 Indonesia 3 1%
10 France 2 0.7%
11 Russia 2 0.7%
12 Peru 2 0.7%
13 United Kingdom 1 0.3%