BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 159 53.9%
2 United States 65 22%
3 Germany 36 12.2%
4 Hong Kong 19 6.4%
5 Taiwan 7 2.4%
6 Canada 3 1%
7 Singapore 2 0.7%
8 United Kingdom 1 0.3%
9 Japan 1 0.3%
10 Mexico 1 0.3%
11 Moldova, Republic of 1 0.3%