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 160 46.4%
2 United States 110 31.9%
3 Germany 43 12.5%
4 Canada 16 4.6%
5 United Kingdom 5 1.4%
6 Netherlands 5 1.4%
7 Russia 2 0.6%
8 Singapore 2 0.6%
9 Australia 1 0.3%
10 Mauritius 1 0.3%