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 148 62.7%
2 Germany 40 16.9%
3 United States 36 15.3%
4 Australia 3 1.3%
5 Canada 3 1.3%
6 United Kingdom 2 0.8%
7 Hong Kong 2 0.8%
8 Iran, Islamic Republic of 1 0.4%
9 Turkey 1 0.4%