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 175 61.8%
2 Germany 45 15.9%
3 United States 41 14.5%
4 Canada 9 3.2%
5 Hong Kong 3 1.1%
6 Hungary 2 0.7%
7 France 2 0.7%
8 Singapore 2 0.7%
9 United Kingdom 2 0.7%
10 Norway 1 0.4%
11 Poland 1 0.4%