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 60 55%
2 United States 20 18.3%
3 Germany 6 5.5%
4 Hong Kong 5 4.6%
5 United Kingdom 5 4.6%
6 Japan 3 2.8%
7 Costa Rica 2 1.8%
8 Canada 2 1.8%
9 Taiwan 2 1.8%
10 Korea, Republic of 1 0.9%
11 Malaysia 1 0.9%
12 Netherlands 1 0.9%
13 Singapore 1 0.9%