BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 27 47.4%
2 China 17 29.8%
3 United Kingdom 5 8.8%
4 Switzerland 2 3.5%
5 France 2 3.5%
6 Hong Kong 1 1.8%
7 Moldova, Republic of 1 1.8%
8 Netherlands 1 1.8%
9 Australia 1 1.8%