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 31 40.8%
2 United States 25 32.9%
3 Germany 7 9.2%
4 Hong Kong 3 3.9%
5 Canada 3 3.9%
6 Taiwan 2 2.6%
7 United Kingdom 2 2.6%
8 France 1 1.3%
9 Portugal 1 1.3%
10 Spain 1 1.3%