BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 United States 59 51.8%
2 China 25 21.9%
3 Germany 6 5.3%
4 Australia 6 5.3%
5 Japan 4 3.5%
6 Korea, Republic of 3 2.6%
7 Switzerland 3 2.6%
8 Singapore 2 1.8%
9 Canada 2 1.8%
10 Indonesia 2 1.8%
11 Taiwan 1 0.9%
12 Turkey 1 0.9%