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 186 53.4%
2 United States 49 14.1%
3 Netherlands 44 12.6%
4 Germany 38 10.9%
5 Canada 15 4.3%
6 Russia 5 1.4%
7 Hong Kong 3 0.9%
8 India 3 0.9%
9 Denmark 2 0.6%
10 France 2 0.6%
11 United Kingdom 1 0.3%