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 226 33.3%
2 China 221 32.6%
3 Germany 81 11.9%
4 Netherlands 64 9.4%
5 Sweden 31 4.6%
6 Korea, Republic of 26 3.8%
7 Canada 9 1.3%
8 Russia 5 0.7%
9 Taiwan 4 0.6%
10 Viet Nam 3 0.4%
11 Australia 3 0.4%
12 Austria 2 0.3%
13 India 2 0.3%
14 Japan 1 0.1%