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 189 50.9%
2 United States 108 29.1%
3 Germany 33 8.9%
4 Canada 18 4.9%
5 Netherlands 5 1.3%
6 Australia 4 1.1%
7 Japan 3 0.8%
8 Russia 3 0.8%
9 Singapore 2 0.5%
10 Macao 2 0.5%
11 Austria 2 0.5%
12 France 1 0.3%
13 Hong Kong 1 0.3%