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 46 47.9%
2 United States 21 21.9%
3 Germany 7 7.3%
4 Portugal 6 6.2%
5 France 5 5.2%
6 United Kingdom 5 5.2%
7 Taiwan 2 2.1%
8 Russia 1 1%
9 Hong Kong 1 1%
10 Korea, Republic of 1 1%
11 Czech Republic 1 1%