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 United States 45 60.8%
2 Germany 10 13.5%
3 China 9 12.2%
4 France 3 4.1%
5 Morocco 2 2.7%
6 Taiwan 2 2.7%
7 Hong Kong 1 1.4%
8 Canada 1 1.4%
9 Czech Republic 1 1.4%