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 102 57.6%
2 United States 27 15.3%
3 Germany 11 6.2%
4 Netherlands 8 4.5%
5 Korea, Republic of 5 2.8%
6 Singapore 4 2.3%
7 Taiwan 4 2.3%
8 United Kingdom 3 1.7%
9 Japan 3 1.7%
10 Romania 2 1.1%
11 Finland 2 1.1%
12 Canada 2 1.1%
13 Brazil 1 0.6%
14 Malaysia 1 0.6%
15 Hong Kong 1 0.6%
16 Switzerland 1 0.6%