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 71 70.3%
2 Germany 11 10.9%
3 Netherlands 7 6.9%
4 United States 6 5.9%
5 United Kingdom 2 2%
6 Russia 1 1%
7 Turkey 1 1%
8 Korea, Republic of 1 1%
9 France 1 1%