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 216 69%
2 United States 50 16%
3 Germany 26 8.3%
4 Hong Kong 9 2.9%
5 Luxembourg 2 0.6%
6 Netherlands 2 0.6%
7 Canada 2 0.6%
8 Russia 1 0.3%
9 Taiwan 1 0.3%
10 United Kingdom 1 0.3%
11 Estonia 1 0.3%
12 Australia 1 0.3%
13 Brazil 1 0.3%