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 189 59.6%
2 United States 50 15.8%
3 Germany 39 12.3%
4 Canada 16 5%
5 India 7 2.2%
6 Netherlands 4 1.3%
7 Singapore 4 1.3%
8 Taiwan 3 0.9%
9 Mexico 2 0.6%
10 Hong Kong 2 0.6%
11 Switzerland 1 0.3%