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 32 43.8%
2 United States 18 24.7%
3 Germany 10 13.7%
4 Netherlands 6 8.2%
5 Canada 2 2.7%
6 United Kingdom 2 2.7%
7 Spain 1 1.4%
8 Hong Kong 1 1.4%
9 France 1 1.4%