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 45 52.3%
2 United States 23 26.7%
3 Germany 7 8.1%
4 Hong Kong 3 3.5%
5 Korea, Republic of 2 2.3%
6 Australia 2 2.3%
7 Canada 1 1.2%
8 Portugal 1 1.2%
9 Sweden 1 1.2%
10 United Kingdom 1 1.2%