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 65 59.6%
2 United States 22 20.2%
3 Germany 6 5.5%
4 Hong Kong 6 5.5%
5 Taiwan 3 2.8%
6 Poland 3 2.8%
7 Czech Republic 2 1.8%
8 Netherlands 1 0.9%
9 Portugal 1 0.9%