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 53 62.4%
2 Germany 12 14.1%
3 Canada 6 7.1%
4 United States 3 3.5%
5 Netherlands 3 3.5%
6 India 3 3.5%
7 Taiwan 2 2.4%
8 Iran, Islamic Republic of 1 1.2%
9 Isle of Man 1 1.2%
10 Jordan 1 1.2%