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 54 62.1%
2 Germany 9 10.3%
3 Netherlands 8 9.2%
4 United States 7 8%
5 Canada 2 2.3%
6 Switzerland 2 2.3%
7 India 2 2.3%
8 France 1 1.1%
9 Poland 1 1.1%
10 Russia 1 1.1%