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 China 172 60.4%
2 Germany 43 15.1%
3 United States 36 12.6%
4 Taiwan 11 3.9%
5 Japan 6 2.1%
6 Singapore 6 2.1%
7 Korea, Republic of 3 1.1%
8 Bangladesh 3 1.1%
9 Canada 2 0.7%
10 Hong Kong 2 0.7%
11 Turkey 1 0.4%