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 189 59.6%
2 United States 51 16.1%
3 Germany 38 12%
4 Canada 24 7.6%
5 Netherlands 4 1.3%
6 Hong Kong 3 0.9%
7 Luxembourg 2 0.6%
8 Bulgaria 2 0.6%
9 Argentina 1 0.3%
10 Brazil 1 0.3%
11 France 1 0.3%
12 Russia 1 0.3%