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 184 57%
2 United States 44 13.6%
3 Netherlands 36 11.1%
4 Germany 32 9.9%
5 Canada 11 3.4%
6 Norway 3 0.9%
7 Singapore 3 0.9%
8 United Kingdom 3 0.9%
9 Russia 2 0.6%
10 Hong Kong 2 0.6%
11 Ireland 1 0.3%
12 Kazakhstan 1 0.3%
13 Mexico 1 0.3%