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 35.7%
2 United States 27 27.6%
3 Netherlands 14 14.3%
4 Germany 8 8.2%
5 Hong Kong 5 5.1%
6 Taiwan 4 4.1%
7 United Kingdom 2 2%
8 Portugal 1 1%
9 Iran, Islamic Republic of 1 1%
10 France 1 1%