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 48 45.3%
2 China 29 27.4%
3 Netherlands 8 7.5%
4 Germany 7 6.6%
5 Hong Kong 3 2.8%
6 Taiwan 3 2.8%
7 Canada 2 1.9%
8 United Kingdom 1 0.9%
9 India 1 0.9%
10 Portugal 1 0.9%
11 Russia 1 0.9%
12 1 0.9%
13 Australia 1 0.9%