BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 42 57.5%
2 Germany 10 13.7%
3 Netherlands 6 8.2%
4 United States 6 8.2%
5 Canada 3 4.1%
6 Poland 3 4.1%
7 Russia 1 1.4%
8 United Kingdom 1 1.4%
9 France 1 1.4%