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 157 70.4%
2 United States 30 13.5%
3 Germany 14 6.3%
4 Hong Kong 7 3.1%
5 Portugal 6 2.7%
6 Canada 4 1.8%
7 Taiwan 2 0.9%
8 Russia 1 0.4%
9 Singapore 1 0.4%
10 Netherlands 1 0.4%