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 241 80.6%
2 United States 25 8.4%
3 Netherlands 8 2.7%
4 Germany 5 1.7%
5 Hong Kong 4 1.3%
6 Japan 4 1.3%
7 Romania 3 1%
8 Sweden 3 1%
9 Taiwan 2 0.7%
10 United Kingdom 1 0.3%
11 Singapore 1 0.3%
12 Norway 1 0.3%
13 Malaysia 1 0.3%