BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 20 44.4%
2 United States 11 24.4%
3 Germany 5 11.1%
4 Spain 2 4.4%
5 Taiwan 2 4.4%
6 France 2 4.4%
7 Canada 2 4.4%
8 Australia 1 2.2%