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 32 57.1%
2 United States 12 21.4%
3 Germany 4 7.1%
4 Ireland 2 3.6%
5 Taiwan 2 3.6%
6 United Kingdom 1 1.8%
7 Korea, Republic of 1 1.8%
8 Lao People's Democratic Republic 1 1.8%
9 Malaysia 1 1.8%