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 46 54.1%
2 United States 21 24.7%
3 Germany 6 7.1%
4 Hong Kong 3 3.5%
5 Taiwan 3 3.5%
6 United Kingdom 1 1.2%
7 Canada 1 1.2%
8 India 1 1.2%
9 Netherlands 1 1.2%
10 Portugal 1 1.2%
11 Switzerland 1 1.2%