BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 25 32.5%
2 China 20 26%
3 Germany 18 23.4%
4 6 7.8%
5 Hong Kong 2 2.6%
6 Switzerland 2 2.6%
7 United Kingdom 1 1.3%
8 Portugal 1 1.3%
9 Canada 1 1.3%
10 France 1 1.3%