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 178 50.4%
2 United States 53 15%
3 Canada 42 11.9%
4 Germany 40 11.3%
5 Netherlands 24 6.8%
6 Iran, Islamic Republic of 6 1.7%
7 Korea, Republic of 2 0.6%
8 Malaysia 2 0.6%
9 Hong Kong 2 0.6%
10 Singapore 2 0.6%
11 United Kingdom 2 0.6%