BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 50 60.2%
2 United States 15 18.1%
3 Netherlands 5 6%
4 Germany 4 4.8%
5 United Kingdom 3 3.6%
6 Canada 2 2.4%
7 Singapore 2 2.4%
8 Switzerland 1 1.2%
9 India 1 1.2%