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 39 52.7%
2 United States 22 29.7%
3 France 4 5.4%
4 Czech Republic 3 4.1%
5 Hong Kong 2 2.7%
6 India 1 1.4%
7 United Kingdom 1 1.4%
8 Canada 1 1.4%
9 Germany 1 1.4%