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 118 48%
2 United States 66 26.8%
3 Germany 31 12.6%
4 Hong Kong 9 3.7%
5 Netherlands 9 3.7%
6 Japan 3 1.2%
7 Puerto Rico 2 0.8%
8 Russia 2 0.8%
9 Australia 2 0.8%
10 Brazil 1 0.4%
11 Canada 1 0.4%
12 United Kingdom 1 0.4%
13 Mongolia 1 0.4%