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 China 32 44.4%
2 United States 22 30.6%
3 Germany 7 9.7%
4 Hong Kong 3 4.2%
5 Korea, Republic of 3 4.2%
6 Taiwan 2 2.8%
7 United Kingdom 1 1.4%
8 France 1 1.4%
9 Portugal 1 1.4%