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 28 37.8%
2 United States 28 37.8%
3 Germany 8 10.8%
4 Hong Kong 3 4.1%
5 France 2 2.7%
6 Japan 1 1.4%
7 Portugal 1 1.4%
8 Russia 1 1.4%
9 Spain 1 1.4%
10 United Kingdom 1 1.4%