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 United States 34 35.4%
2 China 33 34.4%
3 Germany 10 10.4%
4 Netherlands 8 8.3%
5 Canada 3 3.1%
6 Hong Kong 3 3.1%
7 Taiwan 2 2.1%
8 Portugal 1 1%
9 India 1 1%
10 Ireland 1 1%