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 174 59%
2 United States 42 14.2%
3 Canada 27 9.2%
4 Germany 27 9.2%
5 Hong Kong 6 2%
6 Korea, Republic of 4 1.4%
7 Netherlands 4 1.4%
8 Russia 3 1%
9 Luxembourg 2 0.7%
10 Japan 2 0.7%
11 Ukraine 2 0.7%
12 Malaysia 1 0.3%
13 Taiwan 1 0.3%