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 15 31.9%
2 United States 14 29.8%
3 Germany 6 12.8%
4 Japan 2 4.3%
5 Singapore 2 4.3%
6 Tajikistan 2 4.3%
7 Canada 2 4.3%
8 United Kingdom 1 2.1%
9 Macao 1 2.1%
10 Hong Kong 1 2.1%
11 Hungary 1 2.1%