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 51 51.5%
2 United States 22 22.2%
3 Germany 8 8.1%
4 Netherlands 7 7.1%
5 Canada 5 5.1%
6 Japan 2 2%
7 Russia 1 1%
8 Turkey 1 1%
9 Brazil 1 1%
10 France 1 1%