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 176 67.4%
2 United States 37 14.2%
3 Germany 27 10.3%
4 France 4 1.5%
5 Netherlands 3 1.1%
6 Canada 3 1.1%
7 Norway 2 0.8%
8 Russia 2 0.8%
9 Singapore 2 0.8%
10 United Kingdom 2 0.8%
11 Italy 2 0.8%
12 Japan 1 0.4%