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 42 50.6%
2 United States 24 28.9%
3 Germany 7 8.4%
4 Hong Kong 3 3.6%
5 Taiwan 2 2.4%
6 United Kingdom 1 1.2%
7 France 1 1.2%
8 Netherlands 1 1.2%
9 Portugal 1 1.2%
10 Russia 1 1.2%