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 45 40.2%
2 United States 23 20.5%
3 Germany 19 17%
4 Netherlands 10 8.9%
5 Taiwan 6 5.4%
6 Hong Kong 4 3.6%
7 Canada 2 1.8%
8 France 1 0.9%
9 United Kingdom 1 0.9%
10 Portugal 1 0.9%