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 178 65.2%
2 United States 48 17.6%
3 Germany 35 12.8%
4 Hong Kong 3 1.1%
5 Netherlands 2 0.7%
6 Brazil 2 0.7%
7 United Kingdom 2 0.7%
8 Singapore 1 0.4%
9 Sweden 1 0.4%
10 Moldova, Republic of 1 0.4%