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 172 42.3%
2 United States 156 38.3%
3 Germany 40 9.8%
4 Hong Kong 10 2.5%
5 Singapore 5 1.2%
6 Netherlands 4 1%
7 Taiwan 4 1%
8 Malaysia 3 0.7%
9 Canada 2 0.5%
10 France 2 0.5%
11 Japan 2 0.5%
12 Thailand 2 0.5%
13 Switzerland 2 0.5%
14 Norway 1 0.2%
15 United Kingdom 1 0.2%
16 Kazakhstan 1 0.2%