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 34 37%
2 United States 27 29.3%
3 Germany 15 16.3%
4 Hong Kong 5 5.4%
5 Taiwan 3 3.3%
6 Norway 2 2.2%
7 Canada 2 2.2%
8 Portugal 1 1.1%
9 United Kingdom 1 1.1%
10 Korea, Republic of 1 1.1%
11 France 1 1.1%