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 54 49.5%
2 China 28 25.7%
3 Germany 7 6.4%
4 Hong Kong 5 4.6%
5 Netherlands 3 2.8%
6 Taiwan 3 2.8%
7 United Kingdom 2 1.8%
8 Canada 2 1.8%
9 1 0.9%
10 Portugal 1 0.9%
11 Russia 1 0.9%
12 Sweden 1 0.9%
13 India 1 0.9%