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 152 77.2%
2 United States 22 11.2%
3 Germany 7 3.6%
4 Hong Kong 7 3.6%
5 United Kingdom 2 1%
6 Canada 1 0.5%
7 France 1 0.5%
8 Italy 1 0.5%
9 Netherlands 1 0.5%
10 Portugal 1 0.5%
11 Russia 1 0.5%
12 Taiwan 1 0.5%