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 43 60.6%
2 United States 8 11.3%
3 Germany 7 9.9%
4 Ireland 4 5.6%
5 Australia 4 5.6%
6 Venezuela, Bolivarian Republic of 2 2.8%
7 Russia 2 2.8%
8 Hong Kong 1 1.4%