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 219 59%
2 United States 99 26.7%
3 Germany 28 7.5%
4 Hong Kong 5 1.3%
5 Netherlands 5 1.3%
6 Japan 4 1.1%
7 Finland 3 0.8%
8 India 2 0.5%
9 Taiwan 2 0.5%
10 Norway 1 0.3%
11 Australia 1 0.3%
12 Brazil 1 0.3%
13 Canada 1 0.3%