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 13 11.9%
4 Hong Kong 5 4.6%
5 Portugal 5 4.6%
6 Russia 2 1.8%
7 Taiwan 2 1.8%
8 Canada 2 1.8%
9 United Kingdom 1 0.9%
10 Netherlands 1 0.9%