BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 29 39.2%
2 China 14 18.9%
3 United States 14 18.9%
4 Germany 9 12.2%
5 United Kingdom 4 5.4%
6 Italy 1 1.4%
7 Costa Rica 1 1.4%
8 France 1 1.4%
9 Canada 1 1.4%