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 183 52.6%
2 United States 85 24.4%
3 Germany 42 12.1%
4 Netherlands 22 6.3%
5 Canada 7 2%
6 Singapore 2 0.6%
7 Hong Kong 2 0.6%
8 France 2 0.6%
9 Sweden 1 0.3%
10 Ukraine 1 0.3%
11 United Kingdom 1 0.3%