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 35 40.2%
2 China 28 32.2%
3 Germany 7 8%
4 Netherlands 7 8%
5 Hong Kong 3 3.4%
6 Taiwan 2 2.3%
7 United Kingdom 1 1.1%
8 Portugal 1 1.1%
9 Singapore 1 1.1%
10 1 1.1%
11 Canada 1 1.1%