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 679 59.6%
2 United States 208 18.2%
3 Netherlands 164 14.4%
4 Germany 42 3.7%
5 Canada 13 1.1%
6 France 8 0.7%
7 Russia 6 0.5%
8 Austria 5 0.4%
9 India 4 0.4%
10 Taiwan 4 0.4%
11 Nigeria 2 0.2%
12 Luxembourg 2 0.2%
13 Hong Kong 2 0.2%
14 Australia 1 0.1%