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 42 47.2%
2 Netherlands 14 15.7%
3 Canada 12 13.5%
4 United States 11 12.4%
5 Germany 3 3.4%
6 Hong Kong 2 2.2%
7 Viet Nam 2 2.2%
8 Russia 2 2.2%
9 Iran, Islamic Republic of 1 1.1%