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 179 53.8%
2 United States 62 18.6%
3 Germany 37 11.1%
4 Netherlands 32 9.6%
5 Canada 14 4.2%
6 Australia 2 0.6%
7 Hong Kong 2 0.6%
8 Russia 2 0.6%
9 Switzerland 2 0.6%
10 Turkey 1 0.3%