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 68 40.5%
2 United States 40 23.8%
3 Netherlands 23 13.7%
4 Germany 16 9.5%
5 Hong Kong 9 5.4%
6 Canada 6 3.6%
7 United Kingdom 3 1.8%
8 Portugal 1 0.6%
9 Sweden 1 0.6%
10 France 1 0.6%