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 36 50.7%
2 United States 10 14.1%
3 Germany 8 11.3%
4 Netherlands 6 8.5%
5 Sweden 3 4.2%
6 Hong Kong 2 2.8%
7 Singapore 2 2.8%
8 Israel 1 1.4%
9 Korea, Republic of 1 1.4%
10 United Kingdom 1 1.4%
11 Norway 1 1.4%