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 60 40.8%
2 China 34 23.1%
3 Netherlands 25 17%
4 Germany 8 5.4%
5 Hong Kong 8 5.4%
6 Japan 3 2%
7 United Kingdom 2 1.4%
8 Iran, Islamic Republic of 2 1.4%
9 France 1 0.7%
10 Portugal 1 0.7%
11 Singapore 1 0.7%
12 Taiwan 1 0.7%
13 Australia 1 0.7%