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 341 64.7%
2 United States 110 20.9%
3 Germany 44 8.3%
4 Hong Kong 8 1.5%
5 India 4 0.8%
6 Singapore 4 0.8%
7 Canada 3 0.6%
8 United Kingdom 3 0.6%
9 Austria 2 0.4%
10 Japan 2 0.4%
11 Korea, Republic of 2 0.4%
12 Netherlands 2 0.4%
13 Brazil 1 0.2%
14 Ukraine 1 0.2%