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 171 50.3%
2 United States 66 19.4%
3 Germany 39 11.5%
4 Netherlands 26 7.6%
5 Canada 16 4.7%
6 Hong Kong 7 2.1%
7 Taiwan 4 1.2%
8 Ireland 3 0.9%
9 Finland 2 0.6%
10 Australia 2 0.6%
11 Bulgaria 2 0.6%
12 Norway 1 0.3%
13 Singapore 1 0.3%