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 26 57.8%
2 United States 7 15.6%
3 Sweden 4 8.9%
4 Czech Republic 2 4.4%
5 Germany 2 4.4%
6 Japan 1 2.2%
7 Lao People's Democratic Republic 1 2.2%
8 Taiwan 1 2.2%
9 Australia 1 2.2%