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 18 20.9%
2 China 17 19.8%
3 Germany 15 17.4%
4 Netherlands 10 11.6%
5 United Kingdom 7 8.1%
6 France 6 7%
7 India 6 7%
8 Hong Kong 3 3.5%
9 Ukraine 2 2.3%
10 Japan 1 1.2%
11 Estonia 1 1.2%