BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 30 43.5%
2 China 24 34.8%
3 Germany 7 10.1%
4 France 2 2.9%
5 Brazil 2 2.9%
6 Canada 1 1.4%
7 Hong Kong 1 1.4%
8 Korea, Republic of 1 1.4%
9 Taiwan 1 1.4%