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 29 30.9%
2 United States 29 30.9%
3 Germany 12 12.8%
4 Canada 10 10.6%
5 Hong Kong 5 5.3%
6 United Kingdom 3 3.2%
7 Taiwan 2 2.1%
8 Ukraine 1 1.1%
9 Portugal 1 1.1%
10 Brazil 1 1.1%
11 France 1 1.1%