BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 692 85.4%
2 United States 68 8.4%
3 China 24 3%
4 Germany 10 1.2%
5 France 5 0.6%
6 Canada 3 0.4%
7 Ukraine 3 0.4%
8 Switzerland 2 0.2%
9 United Kingdom 1 0.1%
10 Hong Kong 1 0.1%
11 Russia 1 0.1%