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 162 64.3%
2 United States 41 16.3%
3 Germany 19 7.5%
4 Hong Kong 9 3.6%
5 Georgia 5 2%
6 Korea, Republic of 3 1.2%
7 Taiwan 3 1.2%
8 Singapore 3 1.2%
9 Sweden 2 0.8%
10 Portugal 2 0.8%
11 Canada 2 0.8%
12 Brazil 1 0.4%