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 United States 55 39.3%
2 China 47 33.6%
3 Germany 17 12.1%
4 Netherlands 9 6.4%
5 Hong Kong 5 3.6%
6 France 2 1.4%
7 Russia 2 1.4%
8 Taiwan 1 0.7%
9 United Kingdom 1 0.7%
10 Portugal 1 0.7%