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 37 38.1%
2 Netherlands 19 19.6%
3 United States 14 14.4%
4 Canada 10 10.3%
5 Germany 8 8.2%
6 Hong Kong 4 4.1%
7 Sweden 3 3.1%
8 Taiwan 1 1%
9 Singapore 1 1%