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 366 43.9%
2 United States 241 28.9%
3 Netherlands 119 14.3%
4 Germany 61 7.3%
5 Canada 14 1.7%
6 Hong Kong 5 0.6%
7 Taiwan 5 0.6%
8 Korea, Republic of 4 0.5%
9 France 4 0.5%
10 Denmark 3 0.4%
11 Norway 3 0.4%
12 Australia 2 0.2%
13 Austria 2 0.2%
14 India 2 0.2%
15 Sweden 1 0.1%
16 United Kingdom 1 0.1%