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 350 53%
2 United States 116 17.6%
3 Netherlands 103 15.6%
4 Germany 50 7.6%
5 Canada 15 2.3%
6 Russia 8 1.2%
7 France 4 0.6%
8 3 0.5%
9 Belgium 2 0.3%
10 Czech Republic 2 0.3%
11 Hong Kong 2 0.3%
12 Norway 2 0.3%
13 Singapore 1 0.2%
14 Japan 1 0.2%
15 Mauritius 1 0.2%