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 104 59.4%
2 China 39 22.3%
3 Germany 15 8.6%
4 Hong Kong 5 2.9%
5 United Kingdom 3 1.7%
6 Spain 2 1.1%
7 Australia 2 1.1%
8 Austria 2 1.1%
9 Japan 2 1.1%
10 Portugal 1 0.6%