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 152 69.1%
2 United States 35 15.9%
3 Germany 16 7.3%
4 Singapore 7 3.2%
5 Sweden 2 0.9%
6 Portugal 2 0.9%
7 Congo, The Democratic Republic of The 2 0.9%
8 Australia 2 0.9%
9 Hong Kong 1 0.5%
10 Russia 1 0.5%