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 61 61.6%
2 Germany 14 14.1%
3 United States 13 13.1%
4 Netherlands 3 3%
5 Canada 2 2%
6 Hong Kong 2 2%
7 Japan 1 1%
8 France 1 1%
9 Singapore 1 1%
10 United Kingdom 1 1%