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 69 46.3%
2 United States 39 26.2%
3 Germany 15 10.1%
4 Netherlands 8 5.4%
5 Taiwan 7 4.7%
6 Hong Kong 3 2%
7 Canada 2 1.3%
8 United Kingdom 2 1.3%
9 Norway 2 1.3%
10 Portugal 1 0.7%
11 1 0.7%