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 36 50.7%
2 United States 12 16.9%
3 Germany 6 8.5%
4 Netherlands 5 7%
5 Canada 5 7%
6 France 3 4.2%
7 Czech Republic 1 1.4%
8 Sweden 1 1.4%
9 Hong Kong 1 1.4%
10 Malaysia 1 1.4%