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 54 38.6%
2 United States 51 36.4%
3 Germany 16 11.4%
4 Hong Kong 5 3.6%
5 Singapore 3 2.1%
6 Taiwan 3 2.1%
7 United Kingdom 2 1.4%
8 Japan 2 1.4%
9 Portugal 1 0.7%
10 Russia 1 0.7%
11 1 0.7%
12 Canada 1 0.7%