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 35 42.7%
2 United States 21 25.6%
3 Germany 10 12.2%
4 Hong Kong 5 6.1%
5 5 6.1%
6 Taiwan 2 2.4%
7 United Kingdom 1 1.2%
8 Netherlands 1 1.2%
9 Portugal 1 1.2%
10 Russia 1 1.2%