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 22 29.3%
2 China 21 28%
3 Netherlands 15 20%
4 Canada 6 8%
5 Germany 3 4%
6 France 2 2.7%
7 Italy 2 2.7%
8 Poland 1 1.3%
9 United Kingdom 1 1.3%
10 Hong Kong 1 1.3%
11 India 1 1.3%