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 85 51.5%
2 United States 42 25.5%
3 Netherlands 15 9.1%
4 Germany 9 5.5%
5 France 4 2.4%
6 Poland 3 1.8%
7 Russia 2 1.2%
8 Hong Kong 2 1.2%
9 Korea, Republic of 2 1.2%
10 Sweden 1 0.6%