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 46 46%
2 United States 28 28%
3 Germany 14 14%
4 Canada 3 3%
5 Netherlands 3 3%
6 Norway 2 2%
7 United Kingdom 1 1%
8 Australia 1 1%
9 Hong Kong 1 1%
10 Japan 1 1%