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 23 28.8%
2 United States 19 23.8%
3 Germany 16 20%
4 9 11.2%
5 Hong Kong 5 6.2%
6 Taiwan 3 3.8%
7 United Kingdom 1 1.2%
8 Canada 1 1.2%
9 Portugal 1 1.2%
10 Russia 1 1.2%
11 Singapore 1 1.2%