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 China 44 44%
2 United States 29 29%
3 France 7 7%
4 United Kingdom 5 5%
5 Korea, Republic of 4 4%
6 Germany 4 4%
7 Canada 3 3%
8 India 2 2%
9 Moldova, Republic of 1 1%
10 Philippines 1 1%