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 113 57.7%
2 China 43 21.9%
3 Netherlands 16 8.2%
4 Germany 5 2.6%
5 Denmark 3 1.5%
6 Australia 3 1.5%
7 Russia 2 1%
8 France 2 1%
9 Czech Republic 2 1%
10 Hong Kong 2 1%
11 India 2 1%
12 Israel 1 0.5%
13 Japan 1 0.5%
14 Taiwan 1 0.5%