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 160 72.4%
2 United States 25 11.3%
3 Germany 16 7.2%
4 Taiwan 5 2.3%
5 Netherlands 4 1.8%
6 Canada 3 1.4%
7 Hong Kong 3 1.4%
8 India 2 0.9%
9 Finland 1 0.5%
10 Portugal 1 0.5%
11 Russia 1 0.5%