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 50 70.4%
2 United States 9 12.7%
3 Germany 3 4.2%
4 Hong Kong 3 4.2%
5 Australia 2 2.8%
6 Canada 2 2.8%
7 Korea, Republic of 1 1.4%
8 Poland 1 1.4%