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 United States 57 37.3%
2 China 45 29.4%
3 Netherlands 15 9.8%
4 Germany 6 3.9%
5 Canada 5 3.3%
6 Saudi Arabia 5 3.3%
7 Sweden 5 3.3%
8 Indonesia 4 2.6%
9 Russia 3 2%
10 Kazakhstan 2 1.3%
11 Iraq 2 1.3%
12 Viet Nam 2 1.3%
13 Japan 1 0.7%
14 Hong Kong 1 0.7%