BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 48 48.5%
2 United States 21 21.2%
3 Germany 18 18.2%
4 Taiwan 4 4%
5 Hong Kong 3 3%
6 Korea, Republic of 1 1%
7 Netherlands 1 1%
8 Portugal 1 1%
9 United Kingdom 1 1%
10 Canada 1 1%