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 169 59.7%
2 United States 42 14.8%
3 Germany 27 9.5%
4 Canada 20 7.1%
5 Hong Kong 11 3.9%
6 Taiwan 4 1.4%
7 United Kingdom 3 1.1%
8 Russia 3 1.1%
9 Syrian Arab Republic 3 1.1%
10 Lao People's Democratic Republic 1 0.4%