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 82 57.7%
2 United States 30 21.1%
3 Germany 10 7%
4 Taiwan 7 4.9%
5 Hong Kong 4 2.8%
6 United Kingdom 3 2.1%
7 Canada 2 1.4%
8 Korea, Republic of 1 0.7%
9 Nigeria 1 0.7%
10 Portugal 1 0.7%
11 Singapore 1 0.7%