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 33 33%
2 United States 31 31%
3 Netherlands 15 15%
4 Sweden 5 5%
5 Hong Kong 3 3%
6 Finland 2 2%
7 France 2 2%
8 Germany 2 2%
9 Moldova, Republic of 2 2%
10 Russia 2 2%
11 Korea, Republic of 1 1%
12 Mauritius 1 1%
13 Norway 1 1%