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 207 66.1%
2 Germany 46 14.7%
3 United States 38 12.1%
4 Hong Kong 5 1.6%
5 Netherlands 3 1%
6 United Kingdom 3 1%
7 Canada 3 1%
8 Taiwan 2 0.6%
9 Norway 2 0.6%
10 Korea, Republic of 2 0.6%
11 Singapore 1 0.3%
12 Sweden 1 0.3%