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 35 40.7%
2 United States 21 24.4%
3 Netherlands 12 14%
4 Korea, Republic of 6 7%
5 Germany 4 4.7%
6 Hong Kong 3 3.5%
7 Sweden 2 2.3%
8 France 1 1.2%
9 Canada 1 1.2%
10 Singapore 1 1.2%