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 161 73.2%
2 United States 26 11.8%
3 Germany 17 7.7%
4 Taiwan 4 1.8%
5 United Kingdom 4 1.8%
6 Hong Kong 3 1.4%
7 Italy 1 0.5%
8 Romania 1 0.5%
9 Switzerland 1 0.5%
10 Australia 1 0.5%
11 Canada 1 0.5%