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 36 38.3%
2 Netherlands 20 21.3%
3 United States 12 12.8%
4 Germany 10 10.6%
5 France 5 5.3%
6 Canada 4 4.3%
7 3 3.2%
8 United Kingdom 2 2.1%
9 Singapore 1 1.1%
10 Sweden 1 1.1%