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 56 58.9%
2 United States 23 24.2%
3 Germany 7 7.4%
4 Hong Kong 3 3.2%
5 Taiwan 2 2.1%
6 United Kingdom 1 1.1%
7 Canada 1 1.1%
8 Netherlands 1 1.1%
9 Portugal 1 1.1%