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 159 52.6%
2 United States 73 24.2%
3 Germany 34 11.3%
4 Hong Kong 7 2.3%
5 United Kingdom 6 2%
6 Singapore 5 1.7%
7 Taiwan 4 1.3%
8 Sweden 3 1%
9 Malaysia 3 1%
10 Canada 3 1%
11 Norway 2 0.7%
12 France 2 0.7%
13 Netherlands 1 0.3%