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 40 42.1%
2 China 27 28.4%
3 Netherlands 13 13.7%
4 Germany 6 6.3%
5 Hong Kong 3 3.2%
6 France 2 2.1%
7 Portugal 1 1.1%
8 Sweden 1 1.1%
9 Taiwan 1 1.1%
10 United Kingdom 1 1.1%