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 41 36.6%
2 United States 32 28.6%
3 Germany 13 11.6%
4 Netherlands 8 7.1%
5 Canada 7 6.2%
6 Taiwan 3 2.7%
7 United Kingdom 3 2.7%
8 Hong Kong 3 2.7%
9 France 1 0.9%
10 Portugal 1 0.9%