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 173 58.1%
2 Germany 49 16.4%
3 United States 39 13.1%
4 Canada 18 6%
5 Hong Kong 9 3%
6 Netherlands 5 1.7%
7 Sweden 2 0.7%
8 United Kingdom 1 0.3%
9 Italy 1 0.3%
10 Moldova, Republic of 1 0.3%