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 China 39 46.4%
2 United States 20 23.8%
3 Germany 7 8.3%
4 Hong Kong 5 6%
5 Japan 3 3.6%
6 Russia 3 3.6%
7 United Kingdom 3 3.6%
8 Canada 1 1.2%
9 Singapore 1 1.2%
10 Taiwan 1 1.2%
11 Portugal 1 1.2%