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 161 56.7%
2 United States 56 19.7%
3 Germany 39 13.7%
4 Netherlands 5 1.8%
5 Japan 4 1.4%
6 3 1.1%
7 Russia 3 1.1%
8 Singapore 3 1.1%
9 Australia 2 0.7%
10 Canada 2 0.7%
11 France 2 0.7%
12 Norway 2 0.7%
13 Taiwan 1 0.4%
14 United Kingdom 1 0.4%