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 United States 40 41.7%
2 Netherlands 17 17.7%
3 Germany 14 14.6%
4 China 11 11.5%
5 Czech Republic 3 3.1%
6 France 3 3.1%
7 India 2 2.1%
8 Malaysia 2 2.1%
9 Russia 2 2.1%
10 Taiwan 1 1%
11 Canada 1 1%