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 34 28.8%
2 United States 30 25.4%
3 Netherlands 18 15.3%
4 Taiwan 9 7.6%
5 Germany 7 5.9%
6 Hong Kong 6 5.1%
7 India 4 3.4%
8 United Kingdom 3 2.5%
9 Japan 2 1.7%
10 Australia 2 1.7%
11 Canada 1 0.8%
12 Portugal 1 0.8%
13 Ukraine 1 0.8%