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 74 47.4%
2 China 22 14.1%
3 Germany 19 12.2%
4 Netherlands 12 7.7%
5 Russia 10 6.4%
6 Australia 7 4.5%
7 France 4 2.6%
8 Korea, Republic of 2 1.3%
9 Pakistan 2 1.3%
10 Turkey 2 1.3%
11 Peru 1 0.6%
12 Italy 1 0.6%