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 12 25.5%
2 United States 11 23.4%
3 Switzerland 8 17%
4 Netherlands 7 14.9%
5 United Kingdom 3 6.4%
6 Hong Kong 2 4.3%
7 Romania 1 2.1%
8 France 1 2.1%
9 Angola 1 2.1%
10 Australia 1 2.1%