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 China 57 50.4%
2 United States 30 26.5%
3 Germany 6 5.3%
4 Greece 3 2.7%
5 Hong Kong 3 2.7%
6 Singapore 3 2.7%
7 Taiwan 2 1.8%
8 United Kingdom 2 1.8%
9 Canada 2 1.8%
10 Bolivia, Plurinational State of 1 0.9%
11 Denmark 1 0.9%
12 Malaysia 1 0.9%
13 Netherlands 1 0.9%
14 Portugal 1 0.9%