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 13 39.4%
2 China 6 18.2%
3 Taiwan 3 9.1%
4 Australia 2 6.1%
5 Canada 2 6.1%
6 Japan 2 6.1%
7 Korea, Republic of 1 3%
8 Russia 1 3%
9 Sweden 1 3%
10 Italy 1 3%
11 1 3%