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 200 55.7%
2 United States 53 14.8%
3 Germany 40 11.1%
4 Netherlands 24 6.7%
5 Hong Kong 15 4.2%
6 Canada 9 2.5%
7 Singapore 6 1.7%
8 3 0.8%
9 Brazil 2 0.6%
10 Romania 2 0.6%
11 Saudi Arabia 2 0.6%
12 Hungary 1 0.3%
13 Macao 1 0.3%
14 Mexico 1 0.3%