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 United States 29 43.9%
2 China 16 24.2%
3 Germany 7 10.6%
4 France 6 9.1%
5 Brazil 2 3%
6 North Macedonia 2 3%
7 Spain 1 1.5%
8 Japan 1 1.5%
9 Canada 1 1.5%
10 Australia 1 1.5%