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 171 60.6%
2 Germany 51 18.1%
3 United States 45 16%
4 Hong Kong 4 1.4%
5 Taiwan 3 1.1%
6 Australia 2 0.7%
7 Canada 2 0.7%
8 Korea, Republic of 2 0.7%
9 Netherlands 1 0.4%
10 United Kingdom 1 0.4%