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 47 43.1%
2 United States 31 28.4%
3 Germany 14 12.8%
4 Hong Kong 6 5.5%
5 Taiwan 3 2.8%
6 2 1.8%
7 Canada 1 0.9%
8 United Kingdom 1 0.9%
9 Portugal 1 0.9%
10 Russia 1 0.9%
11 Spain 1 0.9%
12 Sweden 1 0.9%