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 United States 25 37.3%
2 China 18 26.9%
3 Germany 5 7.5%
4 Canada 3 4.5%
5 Malaysia 3 4.5%
6 Netherlands 2 3%
7 Singapore 2 3%
8 Macao 2 3%
9 Taiwan 2 3%
10 Ukraine 1 1.5%
11 United Kingdom 1 1.5%
12 Japan 1 1.5%
13 Switzerland 1 1.5%
14 Romania 1 1.5%