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 512 69.5%
2 United States 146 19.8%
3 Germany 36 4.9%
4 Singapore 13 1.8%
5 Hong Kong 7 0.9%
6 Canada 6 0.8%
7 Netherlands 6 0.8%
8 Peru 2 0.3%
9 Japan 2 0.3%
10 Spain 2 0.3%
11 Ukraine 2 0.3%
12 United Kingdom 2 0.3%
13 Malaysia 1 0.1%