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 32 41.6%
2 United States 22 28.6%
3 Germany 8 10.4%
4 Hong Kong 6 7.8%
5 Taiwan 4 5.2%
6 United Kingdom 1 1.3%
7 Finland 1 1.3%
8 Iran, Islamic Republic of 1 1.3%
9 Portugal 1 1.3%
10 Russia 1 1.3%