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 50 51.5%
2 Germany 15 15.5%
3 United States 14 14.4%
4 Canada 6 6.2%
5 Netherlands 4 4.1%
6 India 3 3.1%
7 Russia 2 2.1%
8 Australia 1 1%
9 Ireland 1 1%
10 Japan 1 1%