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 54 56.8%
2 United States 21 22.1%
3 Germany 7 7.4%
4 Hong Kong 5 5.3%
5 Taiwan 2 2.1%
6 Canada 2 2.1%
7 United Kingdom 1 1.1%
8 France 1 1.1%
9 Portugal 1 1.1%
10 Russia 1 1.1%