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 China 32 42.1%
2 United States 21 27.6%
3 Germany 9 11.8%
4 Hong Kong 5 6.6%
5 Taiwan 3 3.9%
6 Canada 2 2.6%
7 United Kingdom 1 1.3%
8 Japan 1 1.3%
9 Portugal 1 1.3%
10 Russia 1 1.3%