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 220 56.8%
2 United States 65 16.8%
3 Germany 38 9.8%
4 Canada 22 5.7%
5 Taiwan 15 3.9%
6 Singapore 4 1%
7 Czech Republic 4 1%
8 Netherlands 4 1%
9 Australia 4 1%
10 Austria 2 0.5%
11 Indonesia 2 0.5%
12 Japan 2 0.5%
13 Korea, Republic of 2 0.5%
14 Russia 2 0.5%
15 1 0.3%