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 44%
2 China 33 36.3%
3 Germany 7 7.7%
4 Hong Kong 3 3.3%
5 Taiwan 3 3.3%
6 United Kingdom 1 1.1%
7 France 1 1.1%
8 Netherlands 1 1.1%
9 Portugal 1 1.1%
10 Sweden 1 1.1%