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 214 59.4%
2 United States 66 18.3%
3 Germany 46 12.8%
4 Taiwan 11 3.1%
5 Netherlands 6 1.7%
6 Russia 4 1.1%
7 Singapore 4 1.1%
8 Hong Kong 3 0.8%
9 Sweden 2 0.6%
10 United Kingdom 2 0.6%
11 Canada 1 0.3%
12 Ukraine 1 0.3%