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 57 57.6%
2 United States 24 24.2%
3 Germany 6 6.1%
4 Hong Kong 4 4%
5 Japan 2 2%
6 United Kingdom 2 2%
7 Canada 1 1%
8 Netherlands 1 1%
9 Portugal 1 1%
10 Taiwan 1 1%