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
1 578 84.4%
2 United States 47 6.9%
3 China 27 3.9%
4 Germany 10 1.5%
5 Taiwan 8 1.2%
6 France 7 1%
7 United Kingdom 4 0.6%
8 Canada 1 0.1%
9 Korea, Republic of 1 0.1%
10 Norway 1 0.1%
11 Sweden 1 0.1%