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 56 55.4%
2 United States 22 21.8%
3 Germany 10 9.9%
4 Hong Kong 6 5.9%
5 United Kingdom 2 2%
6 Canada 1 1%
7 France 1 1%
8 Singapore 1 1%
9 Switzerland 1 1%
10 Ukraine 1 1%