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 43 42.6%
2 United States 26 25.7%
3 Germany 11 10.9%
4 France 7 6.9%
5 Hong Kong 5 5%
6 Czech Republic 4 4%
7 Japan 2 2%
8 Russia 1 1%
9 Taiwan 1 1%
10 Iran, Islamic Republic of 1 1%