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 57 32.8%
2 China 50 28.7%
3 Germany 23 13.2%
4 Netherlands 15 8.6%
5 Macao 11 6.3%
6 Canada 10 5.7%
7 Ukraine 2 1.1%
8 United Kingdom 2 1.1%
9 Hong Kong 2 1.1%
10 Czech Republic 2 1.1%