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 17 35.4%
2 Canada 8 16.7%
3 United States 8 16.7%
4 Sweden 5 10.4%
5 Germany 2 4.2%
6 Netherlands 2 4.2%
7 Russia 2 4.2%
8 Singapore 2 4.2%
9 Hong Kong 1 2.1%
10 Taiwan 1 2.1%