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 38 40.4%
2 United States 28 29.8%
3 Germany 13 13.8%
4 France 7 7.4%
5 Taiwan 3 3.2%
6 United Kingdom 1 1.1%
7 Czech Republic 1 1.1%
8 Hong Kong 1 1.1%
9 India 1 1.1%
10 Japan 1 1.1%