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 378 53.1%
2 United States 134 18.8%
3 Netherlands 106 14.9%
4 Germany 60 8.4%
5 Canada 11 1.5%
6 Sweden 6 0.8%
7 France 4 0.6%
8 Moldova, Republic of 3 0.4%
9 Korea, Republic of 2 0.3%
10 Brazil 2 0.3%
11 United Kingdom 2 0.3%
12 Singapore 2 0.3%
13 Hungary 1 0.1%
14 India 1 0.1%