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 United States 71 42.8%
2 China 36 21.7%
3 Netherlands 28 16.9%
4 Germany 17 10.2%
5 France 5 3%
6 Hong Kong 3 1.8%
7 Sweden 3 1.8%
8 Canada 2 1.2%
9 Australia 1 0.6%