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 54.1%
2 United States 80 25.3%
3 Germany 41 13%
4 Taiwan 5 1.6%
5 Italy 4 1.3%
6 Hong Kong 3 0.9%
7 Canada 2 0.6%
8 Korea, Republic of 2 0.6%
9 Netherlands 2 0.6%
10 Spain 2 0.6%
11 United Kingdom 2 0.6%
12 United Arab Emirates 1 0.3%
13 Australia 1 0.3%