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 51 45.5%
2 China 37 33%
3 Netherlands 5 4.5%
4 Hong Kong 4 3.6%
5 United Kingdom 4 3.6%
6 Canada 2 1.8%
7 Slovakia 2 1.8%
8 Sweden 2 1.8%
9 France 2 1.8%
10 Germany 1 0.9%
11 Finland 1 0.9%
12 Moldova, Republic of 1 0.9%