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 54 47.8%
2 United States 24 21.2%
3 Germany 16 14.2%
4 Hong Kong 7 6.2%
5 Canada 6 5.3%
6 United Kingdom 2 1.8%
7 Netherlands 2 1.8%
8 Portugal 1 0.9%
9 Russia 1 0.9%