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 30 45.5%
2 China 17 25.8%
3 Hong Kong 5 7.6%
4 Netherlands 4 6.1%
5 France 3 4.5%
6 Germany 2 3%
7 Canada 2 3%
8 Australia 1 1.5%
9 Switzerland 1 1.5%
10 United Kingdom 1 1.5%