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 37 27%
2 United States 34 24.8%
3 Taiwan 25 18.2%
4 Netherlands 16 11.7%
5 Canada 8 5.8%
6 Korea, Republic of 4 2.9%
7 Sweden 4 2.9%
8 Germany 3 2.2%
9 Japan 2 1.5%
10 Singapore 2 1.5%
11 Czech Republic 1 0.7%
12 Switzerland 1 0.7%